Cefotaxime EP Impurity C CAS 66403-32-5
| CAS No. | 66403-32-5 |
| Molecular Formula | C17H17N5O8S2 |
| Molecular Weight | 483.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefotaxime EP Impurity C (CAS 66403-32-5) is a certified pharmaceutical impurity reference standard with the molecular formula C17H17N5O8S2 and a molecular weight of 483.48 g/mol.
Structurally, Cefotaxime EP Impurity C (C17H17N5O8S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 483.48 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Cefotaxime EP Impurity C under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H17N5O8S2 |
| Molecular Weight | 483.48 g/mol |
| Purity | >90% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefotaxime Standards
- Cefotaxime Impurity 86 (CAS CATO-C4X-120186)
- Cefotaxime Bromoacetyl analog (CAS 83305-12-8)
- Cefotaxime EP Impurity D Sodium Salt (CAS 65715-12-0)
- Cefotaxime Impurity 16 (CAS CATO-C4X-120116)
- Cefotaxime Impurity 5 (CAS 64485-89-8)
- E-Cefotaxime S-Oxide (CAS 69132-42-9)
- Cefotaxime S-Oxide (CAS 97466-27-8)
- (E)-Cefotaxime S-Oxide (CAS CATO-C4X-120131)
Recommended Standards
- 5-Hydroxyhexan-2-one (CAS 56745-61-0)
- Delamanid Impurity 5 (CAS 1194254-67-5)
- (E)-(4R,9AS)-7-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]-4-(3,4,5-trifluorophenyl)hexahydropyrido[2,1-c][1,4]oxazin-6-one (CAS 937812-80-1)
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(sulfooxy)phenyl)propanoic acid (CAS 181952-24-9)
- Cefcapene Impurity 71 (CAS CATO-C4X-182471)
- Ceftolozane impurity 9 (CAS 1852466-67-1)
- Pranoprofen Impurity 20 (CAS CATO-C4X-181120)
- Ethyl (E)-2-(3-(4-methylstyryl)-6-oxo-5,6-dihydropyridazin-1(4H)-yl)acetate (CAS 1164526-34-4)
- Bevantolol Impurity 23 (CAS CATO-C4X-241123)
- (3-Bromo-5-fluoropyridin-2-yl)methanamine hydrochloride (CAS 1257535-21-9)
- 2-Chloro-4-methoxypyridine (CAS 17228-69-2)
- Methyl 2-(4-bromo-2-oxopyridin-1(2H)-yl)acetate (CAS 1629672-68-9)
- 3-Amino-4-((2,6-dichlorophenyl)thio)benzonitrile (CAS 338982-10-8)
- Peptide-GMF (CAS CATO-CPTD788469)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com