(2S,3R)-Benzhydryl 3-(chloromethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate (Tazobactam Impurity) CAS 2538151-39-0
| CAS No. | 2538151-39-0 |
| Molecular Formula | C21H20ClNO3S |
| Molecular Weight | 401.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(2S,3R)-Benzhydryl 3-(chloromethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate (Tazobactam Impurity) (CAS 2538151-39-0) is a high-purity analytical reference standard with the molecular formula C21H20ClNO3S and a molecular weight of 401.91 g/mol.
Based on its molecular formula C21H20ClNO3S, (2S,3R)-Benzhydryl 3-(chloromethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate (Tazobactam Impurity) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 401.91 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C21H20ClNO3S |
| Molecular Weight | 401.91 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- N-Benzyl-4-chloro-N-[(4-methoxyphenyl)methyl]benzene-1-sulfonamide (CAS 1881290-70-5)
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- 2-(2-Chlorophenyl)-N-(1-(3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl)cyclohexyl)acetamide (CAS 1396679-94-9)
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- N-(6-Chloro-4-trifluoromethyl-pyridin-2-yl)-N-methyl-N-[1-phenyl-eth-(E)-ylidene]-hydrazine (CAS 1311283-77-8)
- 4-Formyl-N-(2-(2-methoxy-4-methylphenoxy)ethyl)benzamide (CAS 1226006-54-7)
- 5-Fluoro-7H-pyrrolo[2,3-b]pyridin-4-amine (CAS 1190310-08-7)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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