Cefixime Impurity 12 CAS 1335555-87-7
| CAS No. | 1335555-87-7 |
| Molecular Formula | C16H15N5O8S2 |
| Molecular Weight | 469.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cefixime Impurity 12 (C16H15N5O8S2) 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 469.45 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Cefixime Impurity 12 (CAS 1335555-87-7, C16H15N5O8S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 Cefixime Impurity 12 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 | C16H15N5O8S2 |
| Molecular Weight | 469.45 g/mol |
| Purity | 97%+ |
| 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.) | 1991 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime Impurity 55 (CAS CATO-C4X-113955)
- Cefixime impurity 85 (CAS CATO-C4X-113985)
- Cefixime Impurity 20 (CAS CATO-C4X-113920)
- Cefixime Methyl Ester Impurity (CAS 88621-01-6)
- Cefixime Impurity 81 (CAS CATO-C4X-113981)
- Cefixime Impurity C16 (CAS 1335475-08-5)
- Cefixime Impurity 100 (CAS CATO-C4X-1139100)
- Cefixime Impurity 17 (CAS CATO-C4X-113917)
Recommended Standards
- (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-4-[4-(trifluoromethyl)phenyl]butanoic acid (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-4-[4-(trifluoromethyl)phenyl]butyric acid (3R)-3-[[9H-fluoren-9-ylmethoxy(oxo)methyl]amino]-4-[4-(trifluoromethyl)phenyl]butanoic acid 269726-78-5 Fmoc-(R)-3-Amino-4-(4-trifluoromethylphenyl)-butyric acid (CAS 269726-78-5)
- Fmoc-R-3-amino-4-(3-trifluoromethylphenyl)-butyric acid (CAS 269726-75-2)
- Fmoc-N-Me-(4-CF3)-Phe-OH (CAS 2255321-51-6)
- Tert-butyl (8S)-6-amino-5,7,7-tricyano-8-(4-(trifluoromethyl)phenyl)-3,7,8,8a-tetrahydroisoquinoline-2(1H)-carboxylate (CAS 1212459-44-3)
- Peramivir Impurity 118 (CAS CATO-C4X-1833118)
- Difelikefalin Impurity 11 (CAS 2219351-44-5)
- Mirogabalin Impurity 90 (CAS CATO-C4X-292490)
- 1,1'-(2-Phenylpyrimidine-4,6-diyl)bis(ethan-1-one) (CAS 325685-74-3)
- Ethyl 7-(difluoromethyl)-5-phenyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 438217-88-0)
- Rimegepant Impurity 125 (CAS CATO-C4X-2487125)
- Olaparib Impurity 42 (CAS CATO-C4X-113542)
- 1-(1,3-Dimethyl-1H-pyrazol-5-yl)-2,2,2-trifluoroethan-1-ol (CAS 2139648-46-5)
- 2-(7-Methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidin-3-yl)acetic acid (CAS 1226208-46-3)
- [γ-Glu]15 Semaglutide (CAS CATO-C4X-222690)
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