Ceftriaxone Impurity 38 CAS 6938-68-7
| CAS No. | 6938-68-7 |
| Molecular Formula | C2H7N3S |
| Molecular Weight | 105.16 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 Ceftriaxone Impurity 38.
Ceftriaxone Impurity 38 (CAS 6938-68-7) is a certified pharmaceutical impurity reference standard with the molecular formula C2H7N3S and a molecular weight of 105.16 g/mol.
Owing to sulfur-containing functionality, Ceftriaxone Impurity 38 is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 105.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Ceftriaxone Impurity 38 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C2H7N3S |
| Molecular Weight | 105.16 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ceftriaxone Standards
- Ceftriaxone Sodium EP Impurity C (CAS 58909-39-0)
- Ceftriaxone EP Impurity C (CAS CATO-C4X-116342)
- Ceftriaxone Impurity 48 (CAS CATO-C4X-116348)
- Ceftriaxone Impurity 37 (CAS 149-30-4)
- Ceftriaxone Impurity 45 (CAS CATO-C4X-116345)
- Ceftriaxone Impurity 26 (CAS 77780-49-5)
- Ceftriaxone impurity 52 (CAS 876500-90-2)
- (E)-Ceftriaxone Disodium (CAS 97164-54-0)
Recommended Standards
- 4005-51-0 6L41AOK74P 2-Amino-1,3,4-thiadiazole 1,3,4-Thiadiazol-2-amine 1,3,4-Thiadiazole, 2-amino- X 26 4-27-00-08053 (Beilstein Handbook Reference) AI3-50581 Aminothiadazole Aminothiadiazole 2-Aminothiadiazole ATDA BRN 0107135 EINECS 223-657-7 FDA 0084 TF 128 1,3,4-Thiadiazole, 2-amino NSC 4728 UNII-6L41AOK74P (CAS 4005-51-0)
- Nintedanib Impurity 97 (CAS 637-98-9)
- RUS62L885R 3179-31-5 Mercaptotriazole 1,2-Dihydro-3H-1,2,4-triazole-3-thione 1H-1,2,4-Triazole-3-thiol 1,2,4-Triazole-3-thiol 3H-1,2,4-Triazole-3-thione, 1,2-dihydro- delta2-1,2,4-Triazoline-5-thione (8CI) AI3-61291 EINECS 221-656-6 ENT 61291 2-Mercapto-1,3,4-triazole 2-Mercapto-1,3,5-triazole 3-Mercapto-1H-1,2,4-triazole 3-Mercapto-1,2,4-triazole 3-Mercapto-4H-1,2,4-triazole 3(5)-Mercapto-1,2,4-triazole 5-Mercapto-1,3,4-triazole NSC 97089 1,3,4-Triazine-2-thiol 1H-1,2,4-Triazole, 3-mercapto- S-Triazole-3-thiol 1,2,4-Triazole-5-thiol 1,3,4-Triazole-2-thiol 1,2,4-Triazole-3-thiol (VAN) 4H-1,2,4-Triazole-3-thiol (VAN) 1,2,4-Triazol-thiol-(3) [German] 1,2,4-Triazol-thiol-(3) UNII-RUS62L885R (CAS 3179-31-5)
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- Lefamulinum Impurity 38 (CAS CATO-C4X-304738)
- Tofacitinib Impurity 96 (CAS 2174011-55-1)
- 2-{[(2-chlorophenyl)methyl]sulfanyl}-4-(cyclohexylamino)-6-phenylpyrimidine-5-carbonitrile (CAS 303985-80-0)
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- 4-((4-Benzylpiperidin-1-yl)methyl)benzoic acid (CAS 330859-35-3)
- 3,6-Dibromo-9-hexyl-9H-carbazole (CAS 150623-72-6)
- 1-(2-Methoxyphenyl)guanidine (CAS 61705-89-3)
- (Des-Thr7)-Glucagon trifluoroacetate salt (CAS 1802078-28-9)
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