Ceftazidime

(6R,7R)-7-{[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-{[(2-carboxypropan-2-yl)oxy]imino}acetyl]amino}-8-oxo-3-(pyridinium-1-ylmethyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Formula: C22H22N6O7S2 (546.0991)
Chinese Name: 头孢他啶
BioDeep ID: BioDeep_00000003324 ( View LC/MS Profile)
SMILES: [O-]C(=O)C1=C(CS[C@]2([H])[C@H](NC(=O)C(=N/OC(C)(C)C(O)=O)\C3=CSC(N)=N3)C(=O)N12)C[N+]1=CC=CC=C1



Found 4 Sample Hits

m/z Adducts Species Organ Scanning Sample
529.0968 [M+H-H2O]+
PPM:1.8		 Mus musculus Urinary bladder MALDI (CHCA)
HR2MSI_mouse_urinary_bladder - S096 - PXD001283
Resolution: 10μm, 260x134

Description

Mass spectrometry imaging of phospholipids in mouse urinary bladder (imzML dataset)
The spatial distribution of phospholipids in a tissue section of mouse urinary bladder was analyzed by MALDI MS imaging at 10 micrometer pixel size with high mass resolution (using an LTQ Orbitrap mass spectrometer).

R, ö, mpp A, Guenther S, Schober Y, Schulz O, Takats Z, Kummer W, Spengler B, Histology by mass spectrometry: label-free tissue characterization obtained from high-accuracy bioanalytical imaging. Angew Chem Int Ed Engl, 49(22):3834-8(2010)

Fig. S2: Single ion images of compounds shown in Fig. 1A-B : (upper left to lower right) m/z = 743.5482 (unknown), m/z = 741.5307 (SM (16:0), [M+K]+), m/z = 798.5410 (PC (34:1), [M+K]+), m/z = 616.1767 (heme b, M+), m/z = 772.5253 (PC (32:0), [M+K]+).

Stability of determined mass values was in the range of +/- 1 ppm over 22 hours of measurement (Fig. S4), with a standard deviation of 0.56 ppm. Accuracy data were obtained during tissue scanning experiments by monitoring the mass signal at nominal mass 798. The internal lock mass function of the Orbitrap instrument was used for automatic calibration during imaging measurements, using the known matrix-related ion signals at m/z = 137.0233, m/z = 444.0925 and m/z = 716.1246.
546.1275 [M-H2O+NH4]+
PPM:9.3		 Mus musculus Left upper arm MALDI (CHCA)
357_l_total ion count - Limb defect imaging - Monash University
Resolution: 50μm, 97x131

Description

Diseased
547.1007 [M+H]+
PPM:10.4		 Mytilus edulis mantle MALDI (DHB)
20190201_MS38_Crassostrea_Mantle_350-1500_DHB_pos_A28_10um_270x210 - MTBLS2960
Resolution: 10μm, 270x210

Description

547.1002 [M+H]+
PPM:11.4		 Mytilus edulis mantle MALDI (DHB)
20190216_MS38_Mytilus_mantle_350-1500_DHB_pos_A26_10um_275x210 - MTBLS2960
Resolution: 10μm, 275x210

Description


Ceftazidime is only found in individuals that have used or taken this drug. It is a semisynthetic, broad-spectrum antibacterial derived from cephaloridine and used especially for Pseudomonas and other gram-negative infections in debilitated patients. [PubChem]The bactericidal activity of ceftazidime results from the inhibition of cell wall synthesis via affinity for penicillin-binding proteins (PBPs). J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use > J01D - Other beta-lactam antibacterials > J01DD - Third-generation cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D002511 - Cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D047090 - beta-Lactams D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D007769 - Lactams