Guanosine

2-amino-9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6,9-dihydro-1H-purin-6-one

Formula: C10H13N5O5 (283.0917)
Chinese Name: 鸟嘌呤核甙, 鸟苷
BioDeep ID: BioDeep_00000000232 ( View LC/MS Profile)
SMILES: [C@H]1([C@@H]([C@@H](O[C@@H]1n1c2c(nc1)c(=O)nc([nH]2)N)CO)O)O



Found 53 Sample Hits

m/z Adducts Species Organ Scanning Sample
322.1918 [M+K]+
PPM:7.4
Marker Pen NA DESI (None)
3ul_0.8Mpa_RAW_20241016-PAPER PNMK - MEMI_test
Resolution: 30μm, 315x42

Description

By writing the four English letters “PNMK” on white paper with a marker pen, and then scanning with a DESI ion source to obtain the scanning result. The signal of the chemical substances on the marker pen used appears on the channel with an m/z value of 322.1918, 323.1953, 546.4010, and etc, from the single cell deconvolution sampling layer class_4. This test data was tested by chuxiaoping from PANOMIX’s R&D laboratory.

248.0813 [M+H-2H2O]+
PPM:14.1
Posidonia oceanica root MALDI (CHCA)
20190614_MS1_A19r-20 - MTBLS1746
Resolution: 17μm, 262x276

Description

Seagrasses are one of the most efficient natural sinks of carbon dioxide (CO2) on Earth. Despite covering less than 0.1% of coastal regions, they have the capacity to bury up to 10% of marine organic matter and can bury the same amount of carbon 35 times faster than tropical rainforests. On land, the soil’s ability to sequestrate carbon is intimately linked to microbial metabolism. Despite the growing attention to the link between plant production, microbial communities, and the carbon cycle in terrestrial ecosystems, these processes remain enigmatic in the sea. Here, we show that seagrasses excrete organic sugars, namely in the form of sucrose, into their rhizospheres. Surprisingly, the microbial communities living underneath meadows do not fully use this sugar stock in their metabolism. Instead, sucrose piles up in the sediments to mM concentrations underneath multiple types of seagrass meadows. Sediment incubation experiments show that microbial communities living underneath a meadow use sucrose at low metabolic rates. Our metagenomic analyses revealed that the distinct community of microorganisms occurring underneath meadows is limited in their ability to degrade simple sugars, which allows these compounds to persist in the environment over relatively long periods of time. Our findings reveal how seagrasses form blue carbon stocks despite the relatively small area they occupy. Unfortunately, anthropogenic disturbances are threatening the long-term persistence of seagrass meadows. Given that these sediments contain a large stock of sugars that heterotopic bacteria can degrade, it is even more important to protect these ecosystems from degradation.

266.0902 [M+H-H2O]+
PPM:6.9
Posidonia oceanica root MALDI (CHCA)
20190614_MS1_A19r-20 - MTBLS1746
Resolution: 17μm, 262x276

Description

Seagrasses are one of the most efficient natural sinks of carbon dioxide (CO2) on Earth. Despite covering less than 0.1% of coastal regions, they have the capacity to bury up to 10% of marine organic matter and can bury the same amount of carbon 35 times faster than tropical rainforests. On land, the soil’s ability to sequestrate carbon is intimately linked to microbial metabolism. Despite the growing attention to the link between plant production, microbial communities, and the carbon cycle in terrestrial ecosystems, these processes remain enigmatic in the sea. Here, we show that seagrasses excrete organic sugars, namely in the form of sucrose, into their rhizospheres. Surprisingly, the microbial communities living underneath meadows do not fully use this sugar stock in their metabolism. Instead, sucrose piles up in the sediments to mM concentrations underneath multiple types of seagrass meadows. Sediment incubation experiments show that microbial communities living underneath a meadow use sucrose at low metabolic rates. Our metagenomic analyses revealed that the distinct community of microorganisms occurring underneath meadows is limited in their ability to degrade simple sugars, which allows these compounds to persist in the environment over relatively long periods of time. Our findings reveal how seagrasses form blue carbon stocks despite the relatively small area they occupy. Unfortunately, anthropogenic disturbances are threatening the long-term persistence of seagrass meadows. Given that these sediments contain a large stock of sugars that heterotopic bacteria can degrade, it is even more important to protect these ecosystems from degradation.

283.1113 [M-H2O+NH4]+
PPM:12.8
Posidonia oceanica root MALDI (CHCA)
20190614_MS1_A19r-20 - MTBLS1746
Resolution: 17μm, 262x276

Description

Seagrasses are one of the most efficient natural sinks of carbon dioxide (CO2) on Earth. Despite covering less than 0.1% of coastal regions, they have the capacity to bury up to 10% of marine organic matter and can bury the same amount of carbon 35 times faster than tropical rainforests. On land, the soil’s ability to sequestrate carbon is intimately linked to microbial metabolism. Despite the growing attention to the link between plant production, microbial communities, and the carbon cycle in terrestrial ecosystems, these processes remain enigmatic in the sea. Here, we show that seagrasses excrete organic sugars, namely in the form of sucrose, into their rhizospheres. Surprisingly, the microbial communities living underneath meadows do not fully use this sugar stock in their metabolism. Instead, sucrose piles up in the sediments to mM concentrations underneath multiple types of seagrass meadows. Sediment incubation experiments show that microbial communities living underneath a meadow use sucrose at low metabolic rates. Our metagenomic analyses revealed that the distinct community of microorganisms occurring underneath meadows is limited in their ability to degrade simple sugars, which allows these compounds to persist in the environment over relatively long periods of time. Our findings reveal how seagrasses form blue carbon stocks despite the relatively small area they occupy. Unfortunately, anthropogenic disturbances are threatening the long-term persistence of seagrass meadows. Given that these sediments contain a large stock of sugars that heterotopic bacteria can degrade, it is even more important to protect these ecosystems from degradation.

248.0815 [M+H-2H2O]+
PPM:14.9
Posidonia oceanica root MALDI (CHCA)
20190613_MS1_A19r-18 - MTBLS1746
Resolution: 17μm, 246x264

Description

266.0908 [M+H-H2O]+
PPM:9.1
Posidonia oceanica root MALDI (CHCA)
20190613_MS1_A19r-18 - MTBLS1746
Resolution: 17μm, 246x264

Description

283.1117 [M-H2O+NH4]+
PPM:11.4
Posidonia oceanica root MALDI (CHCA)
20190613_MS1_A19r-18 - MTBLS1746
Resolution: 17μm, 246x264

Description

301.1223 [M+NH4]+
PPM:10.6
Posidonia oceanica root MALDI (CHCA)
20190613_MS1_A19r-18 - MTBLS1746
Resolution: 17μm, 246x264

Description

283.1114 [M-H2O+NH4]+
PPM:12.5
Posidonia oceanica root MALDI (CHCA)
20190828_MS1_A19r-22 - MTBLS1746
Resolution: 17μm, 292x279

Description

248.0816 [M+H-2H2O]+
PPM:15.3
Posidonia oceanica root MALDI (CHCA)
MS1_20180404_PO_1200 - MTBLS1746
Resolution: 17μm, 193x208

Description

266.0903 [M+H-H2O]+
PPM:7.2
Posidonia oceanica root MALDI (CHCA)
MS1_20180404_PO_1200 - MTBLS1746
Resolution: 17μm, 193x208

Description

283.1117 [M-H2O+NH4]+
PPM:11.4
Posidonia oceanica root MALDI (CHCA)
MS1_20180404_PO_1200 - MTBLS1746
Resolution: 17μm, 193x208

Description

306.0865 [M+Na]+
PPM:18.3
Posidonia oceanica root MALDI (CHCA)
MS1_20180404_PO_1200 - MTBLS1746
Resolution: 17μm, 193x208

Description

283.1109 [M-H2O+NH4]+
PPM:14.2
Homo sapiens esophagus DESI ()
LNTO22_1_3 - MTBLS385
Resolution: 75μm, 121x68

Description

283.1097 [M-H2O+NH4]+
PPM:18.5
Homo sapiens esophagus DESI ()
LNTO22_1_4 - MTBLS385
Resolution: 17μm, 82x80

Description

301.1305 [M+NH4]+
PPM:16.6
Homo sapiens esophagus DESI ()
LNTO22_1_4 - MTBLS385
Resolution: 17μm, 82x80

Description

306.0757 [M+Na]+
PPM:16.9
Homo sapiens esophagus DESI ()
LNTO22_1_4 - MTBLS385
Resolution: 17μm, 82x80

Description

322.1876 [M+K]+
PPM:5.6
Homo sapiens esophagus DESI ()
LNTO22_1_4 - MTBLS385
Resolution: 17μm, 82x80

Description

283.1106 [M-H2O+NH4]+
PPM:15.3
Homo sapiens esophagus DESI ()
LNTO29_16_2 - MTBLS385
Resolution: 17μm, 95x101

Description

283.1102 [M-H2O+NH4]+
PPM:16.7
Homo sapiens esophagus DESI ()
TO42T - MTBLS385
Resolution: 17μm, 69x81

Description

266.0872 [M+H-H2O]+
PPM:4.4
Mus musculus Liver MALDI (CHCA)
Salmonella_final_pos_recal - MTBLS2671
Resolution: 17μm, 691x430

Description

A more complete and holistic view on host–microbe interactions is needed to understand the physiological and cellular barriers that affect the efficacy of drug treatments and allow the discovery and development of new therapeutics. Here, we developed a multimodal imaging approach combining histopathology with mass spectrometry imaging (MSI) and same section imaging mass cytometry (IMC) to study the effects of Salmonella Typhimurium infection in the liver of a mouse model using the S. Typhimurium strains SL3261 and SL1344. This approach enables correlation of tissue morphology and specific cell phenotypes with molecular images of tissue metabolism. IMC revealed a marked increase in immune cell markers and localization in immune aggregates in infected tissues. A correlative computational method (network analysis) was deployed to find metabolic features associated with infection and revealed metabolic clusters of acetyl carnitines, as well as phosphatidylcholine and phosphatidylethanolamine plasmalogen species, which could be associated with pro-inflammatory immune cell types. By developing an IMC marker for the detection of Salmonella LPS, we were further able to identify and characterize those cell types which contained S. Typhimurium. [dataset] Nicole Strittmatter. Holistic Characterization of a Salmonella Typhimurium Infection Model Using Integrated Molecular Imaging, metabolights_dataset, V1; 2022. https://www.ebi.ac.uk/metabolights/MTBLS2671.

322.1863 [M+K]+
PPM:9.7
Mus musculus Liver MALDI (CHCA)
Salmonella_final_pos_recal - MTBLS2671
Resolution: 17μm, 691x430

Description

A more complete and holistic view on host–microbe interactions is needed to understand the physiological and cellular barriers that affect the efficacy of drug treatments and allow the discovery and development of new therapeutics. Here, we developed a multimodal imaging approach combining histopathology with mass spectrometry imaging (MSI) and same section imaging mass cytometry (IMC) to study the effects of Salmonella Typhimurium infection in the liver of a mouse model using the S. Typhimurium strains SL3261 and SL1344. This approach enables correlation of tissue morphology and specific cell phenotypes with molecular images of tissue metabolism. IMC revealed a marked increase in immune cell markers and localization in immune aggregates in infected tissues. A correlative computational method (network analysis) was deployed to find metabolic features associated with infection and revealed metabolic clusters of acetyl carnitines, as well as phosphatidylcholine and phosphatidylethanolamine plasmalogen species, which could be associated with pro-inflammatory immune cell types. By developing an IMC marker for the detection of Salmonella LPS, we were further able to identify and characterize those cell types which contained S. Typhimurium. [dataset] Nicole Strittmatter. Holistic Characterization of a Salmonella Typhimurium Infection Model Using Integrated Molecular Imaging, metabolights_dataset, V1; 2022. https://www.ebi.ac.uk/metabolights/MTBLS2671.

283.1105 [M-H2O+NH4]+
PPM:15.6
Homo sapiens esophagus DESI ()
LNTO30_8M_1 - MTBLS385
Resolution: 17μm, 69x54

Description

283.1102 [M-H2O+NH4]+
PPM:16.7
Homo sapiens esophagus DESI ()
TO39T - MTBLS385
Resolution: 17μm, 69x81

Description

283.1095 [M-H2O+NH4]+
PPM:19.2
Homo sapiens colorectal adenocarcinoma DESI ()
80TopL, 50TopR, 70BottomL, 60BottomR-profile - MTBLS415
Resolution: 17μm, 137x136

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

283.1096 [M-H2O+NH4]+
PPM:18.8
Homo sapiens colorectal adenocarcinoma DESI ()
520TopL, 490TopR, 510BottomL, 500BottomR-profile - MTBLS415
Resolution: 17μm, 147x131

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

283.1138 [M-H2O+NH4]+
PPM:4
Homo sapiens colorectal adenocarcinoma DESI ()
439TopL, 409TopR, 429BottomL, 419BottomR-profile - MTBLS415
Resolution: 17μm, 157x136

Description

The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

283.1103 [M-H2O+NH4]+
PPM:16.3
Homo sapiens NA DESI ()
160TopL,130TopR,150BottomL,140BottomR-profile - MTBLS415
Resolution: 17μm, 142x136

Description

283.1104 [M-H2O+NH4]+
PPM:16
Homo sapiens esophagus DESI ()
LNTO29_16_3 - MTBLS385
Resolution: 17μm, 108x107

Description

283.1109 [M-H2O+NH4]+
PPM:14.2
Homo sapiens esophagus DESI ()
LNTO26_7_1 - MTBLS385
Resolution: 17μm, 75x74

Description

283.1112 [M-H2O+NH4]+
PPM:13.2
Homo sapiens esophagus DESI ()
LNTO26_7_2 - MTBLS385
Resolution: 17μm, 135x101

Description

283.1108 [M-H2O+NH4]+
PPM:14.6
Homo sapiens esophagus DESI ()
LNTO26_7_3 - MTBLS385
Resolution: 75μm, 82x88

Description

283.1098 [M-H2O+NH4]+
PPM:18.1
Homo sapiens esophagus DESI ()
TO40T - MTBLS385
Resolution: 17μm, 82x74

Description

306.0759 [M+Na]+
PPM:16.3
Homo sapiens esophagus DESI ()
TO40T - MTBLS385
Resolution: 17μm, 82x74

Description

283.1105 [M-H2O+NH4]+
PPM:15.6
Homo sapiens esophagus DESI ()
TO31T - MTBLS385
Resolution: 75μm, 56x54

Description

283.111 [M-H2O+NH4]+
PPM:13.9
Homo sapiens esophagus DESI ()
TO29T - MTBLS385
Resolution: 75μm, 56x48

Description

283.1104 [M-H2O+NH4]+
PPM:16
Homo sapiens esophagus DESI ()
TO41T - MTBLS385
Resolution: 75μm, 69x43

Description

283.1106 [M-H2O+NH4]+
PPM:15.3
Homo sapiens esophagus DESI ()
LNTO30_8M_2 - MTBLS385
Resolution: 75μm, 108x68

Description

283.1105 [M-H2O+NH4]+
PPM:15.6
Homo sapiens esophagus DESI ()
LNTO30_8M_3 - MTBLS385
Resolution: 75μm, 69x54

Description

283.1107 [M-H2O+NH4]+
PPM:14.9
Homo sapiens esophagus DESI ()
LNTO30_8M_4 - MTBLS385
Resolution: 75μm, 62x48

Description

283.1106 [M-H2O+NH4]+
PPM:15.3
Homo sapiens esophagus DESI ()
LNTO30_8M_5 - MTBLS385
Resolution: 75μm, 56x54

Description

283.1106 [M-H2O+NH4]+
PPM:15.3
Homo sapiens esophagus DESI ()
LNTO30_17_2 - MTBLS385
Resolution: 75μm, 82x54

Description

283.1108 [M-H2O+NH4]+
PPM:14.6
Homo sapiens esophagus DESI ()
LNTO22_1_8 - MTBLS385
Resolution: 75μm, 69x61

Description

283.1117 [M-H2O+NH4]+
PPM:11.4
Homo sapiens esophagus DESI ()
LNTO22_2_2 - MTBLS385
Resolution: 75μm, 135x94

Description

283.111 [M-H2O+NH4]+
PPM:13.9
Homo sapiens esophagus DESI ()
LNTO26_16_1 - MTBLS385
Resolution: 75μm, 95x88

Description

283.1104 [M-H2O+NH4]+
PPM:16
Homo sapiens esophagus DESI ()
LNTO29_18_2 - MTBLS385
Resolution: 75μm, 62x68

Description

283.1106 [M-H2O+NH4]+
PPM:15.3
Homo sapiens esophagus DESI ()
LNTO30_7_1 - MTBLS385
Resolution: 75μm, 69x68

Description

283.1105 [M-H2O+NH4]+
PPM:15.6
Homo sapiens esophagus DESI ()
LNTO30_7_2 - MTBLS385
Resolution: 75μm, 82x68

Description

283.1102 [M-H2O+NH4]+
PPM:16.7
Homo sapiens colorectal adenocarcinoma DESI ()
240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176
Resolution: 50μm, 142x141

Description

283.1105 [M-H2O+NH4]+
PPM:15.6
Homo sapiens colorectal adenocarcinoma DESI ()
200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176
Resolution: 50μm, 132x126

Description

283.1102 [M-H2O+NH4]+
PPM:16.7
Homo sapiens colorectal adenocarcinoma DESI ()
160TopL,130TopR,150BottomL,140BottomR-centroid - MTBLS176
Resolution: 50μm, 142x136

Description

283.1104 [M-H2O+NH4]+
PPM:16
Homo sapiens colorectal adenocarcinoma DESI ()
120TopL, 90TopR, 110BottomL, 100BottomR-centroid - MTBLS176
Resolution: 50μm, 132x136

Description

322.191 [M+K]+
PPM:4.9
Drosophila melanogaster brain MALDI (DHB)
Drosophila18 - 2019-10-16_14h26m34s
Resolution: 5μm, 686x685

Description

Sample information Organism: Drosophila melanogaster Organism part: Brain Condition: Healthy Sample preparation Sample stabilisation: Frozen Tissue modification: Frozen MALDI matrix: 2,5-dihydroxybenzoic acid (DHB) MALDI matrix application: TM sprayer Solvent: Aceton/water MS analysis Polarity: Positive Ionisation source: Prototype Analyzer: Orbitrap Pixel size: 5μm × 5μm Annotation settings m/z tolerance (ppm): 3 Analysis version: Original MSM Pixel count: 469910 Imzml file size: 696.23 MB Ibd file size: 814.11 MB


Guanosine (G), also known as 2-amino-inosine, belongs to the class of organic compounds known as purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl sugar moiety. Guanosine consists of a guanine base attached to a ribose (ribofuranose) ring via a beta-N9-glycosidic bond. Guanosine is a white, crystalline powder with no odor and mild saline taste. It is very soluble in acetic acid, and slightly soluble in water, but insoluble in ethanol, diethyl ether, benzene, and chloroform. Guanosine exists in all living species, ranging from bacteria to plants to humans. High levels of guanosine can be found in clovers, coffee plants, and the pollen of pines. It has been detected, but not quantified in, several different foods, such as leeks, garlic, chicory roots, green bell peppers, and black-eyed peas. Guanosine plays an important role in various biochemical processes including the synthesis of nucleic acids such as RNA and intracellular signal transduction (cGMP). The antiviral drug acyclovir, often used in herpes treatment, and the anti-HIV drug abacavir, are both structurally similar to guanosine. Guanosine can be phosphorylated to become guanosine monophosphate (GMP), cyclic guanosine monophosphate (cGMP), guanosine diphosphate (GDP), and guanosine triphosphate (GTP). In humans, guanosine is involved in intracellular signalling through the adenosine receptors A1R and A2AR (PMID: 31847113). Evidence from rodent and cell models has shown a number of important neurotrophic and neuroprotective effects of guanosine. In particular, it is effective in preventing deleterious consequences of seizures, spinal cord injury, pain, mood disorders and aging-related diseases, such as ischemia, Parkinson‚Äôs and Alzheimer‚Äôs diseases (PMID: 27699087). Studies with rodent models of Parkinson‚Äôs disease have shown that guanosine decreases neuronal apoptotic cell death and increases dopaminergic neurons at substantia nigra pars compacta, accompanied by an improvement of motor symptoms in Parkinson‚Äôs disease (i.e. a reduction of bradykinesia). Guanosine promotes neurite arborization, outgrowth, proliferation and differentiation. Systemic administration of guanosine for eight weeks (8 mg/kg) has been shown to stimulate neuroprogenitors proliferation in the subventricular zone (SVZ) in a mouse model of Parkinsonism (PMID: 27699087). The effect of guanosine treatment is accompanied by an increased number of fibroblast growth factor (FGF-2)-positive cells which is an important regulator of neuroprogenitor/stem cell proliferation, survival and differentiation (PMID: 27699087). Guanosine prevents reactive oxygen species (ROS) generation and cell death in hippocampal slices subjected to the oxygen/glucose deprivation (PMID: 31847113). Guanosine is a purine nucleoside in which guanine is attached to ribofuranose via a beta-N(9)-glycosidic bond. It has a role as a fundamental metabolite. It is a purines D-ribonucleoside and a member of guanosines. It is functionally related to a guanine. Guanosine is a nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine can be phosphorylated to become GMP (guanosine monophosphate), cGMP (cyclic guanosine monophosphate), GDP (guanosine diphosphate) and GTP (guanosine triphosphate) which are factors in signal transduction pathways. Guanosine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Guanosine is a natural product found in Ulva australis, Allium chinense, and other organisms with data available. Guanosine is a purine nucleoside formed from a beta-N9-glycosidic bond between guanine and a ribose ring and is essential for metabolism. Guanosine is a metabolite found in or produced by Saccharomyces cerevisiae. A purine nucleoside that has guanine linked by its N9 nitrogen to the C1 carbon of ribose. It is a component of ribonucleic acid and its nucleotides play important roles in metabolism. (From Dorland, 28th ed) Guanosine is a nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a beta-N9-glycosidic bond. Guanosine can be phosphorylated to become GMP (guanosine monophosphate), cGMP (cyclic guanosine monophosphate), GDP (guanosine diphosphate) and GTP (guanosine triphosphate). ; The nucleoside guanosine exert important neuroprotective and neuromodulator roles in the central nervous system, which may be related to inhibition of the glutamatergic neurotransmission activity. Guanosine is the specific extracellular guanine-based purines effector and indicate that its conversion occurs not only in the central nervous system but also peripherally. (PMID: 16325434); Guanosine is a nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a ?-N9-glycosidic bond. Guanosine is found in many foods, some of which are elderberry, malus (crab apple), acerola, and arrowhead. A purine nucleoside in which guanine is attached to ribofuranose via a beta-N(9)-glycosidic bond. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS [Spectral] Guanosine (exact mass = 283.09167) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) and Glutathione disulfide (exact mass = 612.15196) and AMP (exact mass = 347.06308) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Guanosine (exact mass = 283.09167) and Guanine (exact mass = 151.04941) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. Acquisition and generation of the data is financially supported in part by CREST/JST. relative retention time with respect to 9-anthracene Carboxylic Acid is 0.125 CONFIDENCE standard compound; INTERNAL_ID 317 KEIO_ID G015; [MS2] KO008966 Annotation level-2 KEIO_ID G015 Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity. Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity. Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity.