Cefmetazole sodium Impurity 18 CAS 56796-19-1
| CAS No. | 56796-19-1 |
| Molecular Formula | C28H27N7O5S3 |
| Molecular Weight | 637.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Cefmetazole sodium Impurity 18 (CAS 56796-19-1), molecular formula C28H27N7O5S3 and molecular weight 637.75 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C28H27N7O5S3, Cefmetazole sodium Impurity 18 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 637.75 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Cefmetazole sodium Impurity 18 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 | C28H27N7O5S3 |
| Molecular Weight | 637.75 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 7 |
| Sulfur Atoms | 3 |
Related Cefmetazole Standards
- Cefmetazole Impurity 24 (CAS CATO-C4X-150724)
- Cefmetazole Impurity 55 (CAS CATO-C4X-150755)
- Cefmetazole Impurity 32 (CAS CATO-C4X-150732)
- Cefmetazole Impurity 73 (CAS CATO-C4X-150773)
- Cefmetazole Impurity 43 (CAS CATO-C4X-150743)
- Cefmetazole Impurity 15 (CAS CATO-C4X-150715)
- Cefmetazole Impurity 56 (CAS CATO-C4X-150756)
- Cefmetazole Impurity 42 (CAS CATO-C4X-150742)
Recommended Standards
- 29-Azido-3,6,9,12,15,18,21,24,27-nonaoxanonacosyl 4-methylbenzenesulfonate (CAS 1418561-45-1)
- Cefdinir Impurity 70 (CAS CATO-C4X-121070)
- (Pro18,Asp21)-Amyloid β-Protein (17-21) (CAS 182912-74-9)
- Trityl-PEG8-azide (CAS 1818294-30-2)
- 1-[(2-Chlorophenyl)methyl]-3'-[3-(trifluoromethyl)phenyl]-1,2-dihydrospiro[indole-3,2'-[1,3]thiazolidine]-2,4'-dione (CAS 338418-97-6)
- 2-(4-Bromophenyl)pyrrolidine (CAS 383127-22-8)
- Diethyl 2-(3-oxo-3,4-dihydroquinoxalin-2-yl)hexanedioate (CAS 1501-72-0)
- Cefprozil EP Impurity F (CAS 107937-01-9)
- 2-Cyclobutoxy-5-methylpyridin-3-amine (CAS 1534629-75-8)
- 9-(Benzylamino)-1,2,3,4-tetrahydroacridin-1-ol Maleate (CAS 113108-86-4)
- 1-(4-Bromo-2,6-dichlorobenzenesulfonyl)piperazine hydrochloride (CAS 1172362-33-2)
- 6-Chloro-2-(((3,5-dimethylphenyl)thio)methyl)-3-(o-tolyl)quinazolin-4(3H)-one (CAS 866049-02-7)
- 5,6-Dimethyl-N-(pyridin-2-ylmethyl)-1,3-benzothiazol-2-amine (CAS 1105191-66-9)
- Allo-Thr5-Tirzepatide (CAS CATO-CPTD788934)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com