M/Z: 551.2542

Hit 2 annotations: Fantofarone_[M+H]+; Irinotecan_[M+H-2H2O]+

在BioDeep NovoCell知识数据库中，参考离子总共被划分为4个级别。

Confirmed: 这个参考离子已经通过手动审计得到确认和验证。
Reliable: 这个参考离子可能在特定的解剖组织环境中高度保守。
Unreliable: 这个参考离子具有较高的排名价值，但缺乏可重复性。
Unavailable: 由于排名价值低且缺乏可重复性，这个参考离子不应用于注释。

Found 2 Reference Ions Near m/z 551.2542

NovoCell ID	m/z	Mass Window	Metabolite	Ranking	Anatomy Context
MSI_000008072 Reliable	551.2536	551.2536 ~ 551.2537 MzDiff: `0.2 ppm`	Fantofarone (BioDeep_00000178982) Formula: C31H38N2O5S (550.2501)	14.28 (100%)	Rattus norvegicus [UBERON:0004360] cauda epididymis
MSI_000031080 Unreliable	551.2525	551.2525 ~ 551.2525 MzDiff: `none`	Fantofarone (BioDeep_00000178982) Formula: C31H38N2O5S (550.2501)	2.55 (100%)	Macropus giganteus [UBERON:0006093] precuneus cortex

Found 9 Sample Hits

Metabolite	Species	Sample
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 6.7)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_43 Resolution: 17μm, 298x106 Description
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 6.9)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_44 Resolution: 17μm, 299x111 Description
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 6.7)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_46 Resolution: 17μm, 298x106 Description
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 6.9)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_47 Resolution: 17μm, 301x111 Description
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 6.9)	Rattus norvegicus (Epididymis)	epik_dhb_head_ito08_48 Resolution: 17μm, 294x107 Description
Irinotecan Formula: C33H38N4O6 (586.2791) Adducts: [M+H-2H2O]+ (Ppm: 8.5)	Mus musculus (Lung)	image4 Resolution: 40μm, 162x156 Description Fig 6c Fig. 6 MALDI-MSI of U13C-PC16:0/16:0 acyl chain remodeling. A: Averaged MALDI mass spectrum from lung tissue collected from mice euthanized 12 h after administration of D9-choline and U13C-DPPC–containing Poractant alfa surfactant. The ion at m/z 828.6321 is assigned as the [M+Na]+ ion of 13C24-PC16:0_20:4 formed by acyl remodeling of U13C-PC16:0/16:0. The “NL” value refers to the intensity of the base peak in the full range MS1 spectrum. B: MS/MS spectrum of precursor ions at m/z 828.5 ± 0.5 with fragment ions originating from [13C24-PC16:0_20:4+Na]+ annotated. Part-per-million (ppm) mass errors are provided in parentheses. C, D: MALDI-MSI data of [U13C-DPPC+Na]+ (blue), [PC36:4+Na]+ (green) and [13C24-PC16:0_20:4+Na]+ (red) in lung tissue collected from mice (C) 12 h and (D) 18 h after label administration. All images were visualized using total-ion-current normalization and hotspot removal (high quantile = 99%). MS/MS, tandem mass spectrometry; MSI, mass spectrometry imaging; PC, phosphatidylcholine; U13C-DPPC, universally 13C-labeled dipalmitoyl PC.
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 8.9)	Macropus giganteus (Brain)	170321_kangaroobrain-dan3-pos_maxof50.0_med1 Resolution: 50μm, 81x50 Description Sample information Organism: Macropus giganteus (kangaroo) Organism part: Brain Condition: Wildtype Sample growth conditions: Wild
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 5.8)	Mytilus edulis (mantle)	20190201_MS38_Crassostrea_Mantle_350-1500_DHB_pos_A28_10um_270x210 Resolution: 10μm, 270x210 Description
Fantofarone Formula: C31H38N2O5S (550.2501) Adducts: [M+H]+ (Ppm: 6.5)	Mytilus edulis (mantle)	20190216_MS38_Mytilus_mantle_350-1500_DHB_pos_A26_10um_275x210 Resolution: 10μm, 275x210 Description