Cephacetrile Impurity 3 CAS CATO-C4X-23113
| CAS No. | CATO-C4X-23113 |
| Molecular Formula | C11H9N3O4S |
| Molecular Weight | 279.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Cephacetrile Impurity 3.
CATO supplies Cephacetrile Impurity 3 (CAS CATO-C4X-23113), a pharmacopoeial impurity reference standard (molecular formula C11H9N3O4S, MW 279.27 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cephacetrile Impurity 3 (C11H9N3O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 279.27 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H9N3O4S |
| Molecular Weight | 279.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cephacetrile Standards
Recommended Standards
- Flumazenil Impurity 20 (CAS CATO-C4X-143220)
- Isothiazole Impurity 1 (CAS 252004-30-1)
- Avibactam Impurity 39 (CAS CATO-C4X-134839)
- (S)-1-tert-Butyl 2-ethyl 4,4-difluoropyrrolidine-1,2-dicarboxylate (CAS 1001853-59-3)
- Edoxaban Impurity 125 (CAS 2230882-27-4(free base))
- Rotigotine EP Impurity B TFA salt (CAS CATO-C4X-192711)
- Solifenacin Impurity 13 (CAS 52250-50-7)
- 3-Chloro-7-{[(dimethylamino)(ethoxy)phosphoryl]oxy}-4-methyl-2H-chromen-2-one (CAS 194988-29-9)
- (4-Amino-piperidin-1-yl)-acetic acid ethyl ester x 2 HCl, 98% (CAS 100708-07-4)
- 9b-(4-Chlorophenyl)-1,2,3,9b-tetrahydro-5H-imidazo[2,1-a]isoindol-5-one-d4 (CAS 1346601-41-9)
- 1-(4-fluorophenyl)-5-methyl-1H-pyrazole-4-sulfonyl chloride (CAS 1305652-34-9)
- 2-Ethoxyquinoline-4-carbonitrile (CAS 859938-23-1)
- N4-ethyl-n4-(2-methanesulfonamidoethyl)-2-methyl-1,4-phenylenediamine sesquisulfate monohydrate (CAS 24567-76-8)
- Semaglutide impurity 58 (CAS CATO-C4X-222658)
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