Cefmenoxime Impurity 40 CAS 21566-74-5
| CAS No. | 21566-74-5 |
| Molecular Formula | C14H25N3O6S |
| Molecular Weight | 363.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefmenoxime Impurity 40 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 363.43 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.
Cefmenoxime Impurity 40 (CAS 21566-74-5) is a high-purity analytical reference standard with the molecular formula C14H25N3O6S and a molecular weight of 363.43 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C14H25N3O6S |
| Molecular Weight | 363.43 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefmenoxime Standards
- Cefmenoxime Impurity 10 (CAS CATO-C4X-147710)
- Cefmenoxime Impurity 11 (CAS CATO-C4X-147711)
- Cefmenoxime Impurity 2 (CAS 66340-45-2)
- Cefmenoxime Impurity 3 (CAS 126747-52-2)
- Cefmenoxime Impurity 6 (CAS CATO-C4X-14776)
- Cefmenoxime Impurity 1 (CAS 184696-69-3)
- Cefmenoxime Impurity 5 (CAS CATO-C4X-14775)
- Cefmenoxime Impurity 4 (CAS CATO-C4X-14774)
Recommended Standards
- 8-Methyl-N'-(4-methylbenzoyl)-8H-thieno[2,3-b]indole-2-carbohydrazide (CAS 477855-85-9)
- Cis-4,5-diphenyl-3-(phenylsulfonyl)-4,5-dihydroisoxazole (CAS 85355-67-5)
- 8-Methyl-N'-(3-methylbenzoyl)-8H-thieno[2,3-b]indole-2-carbohydrazide (CAS 477855-84-8)
- Diethyl 2-Acetamido-2-(Benzo(B)Thiophene-3-Ylmethyl)Malonate (CAS 23906-20-9)
- (2,6-Dichloro-3-methoxyphenyl)(methyl)sulfane (CAS 1936630-08-8)
- 1,3-Dimethyl-5-(3-(trifluoromethyl)phenoxy)-1H-pyrazole-4-carbaldehyde (CAS 109925-28-2)
- 2,3-Dichloro-6-nitrobenzoic Acid (CAS 13300-62-4)
- (4-Fluorophenyl)acetic acid hydrazide (CAS 34547-28-9)
- Fulvestrant Impurity 60 (CAS 875573-69-6)
- Benzyl-PEG6-THP (CAS 230620-73-2)
- 5-methanesulfonylthiophene-2-carbonitrile (CAS 859794-80-2)
- 6-Amino-2-chloropyridine-3-thiol (CAS 2374137-52-5)
- Resorufin N-acetyl-b-D-glucosamine (CAS 124762-32-9)
- Biotinyl-Neuropeptide W-23 (human) (CAS 1815618-09-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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