Cefprozil EP Impurity B Sodium Salt CAS 42284-83-3
| CAS No. | 42284-83-3 |
| Molecular Formula | C16H16N3O5S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Cefprozil EP Impurity B Sodium Salt 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.
CATO supplies Cefprozil EP Impurity B Sodium Salt (CAS 42284-83-3), a certified reference material (molecular formula C16H16N3O5SNa, MW 385.37 g/mol) for analytical method development and quality control.
Cefprozil EP Impurity B Sodium Salt (C16H16N3O5SNa) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H16N3O5S Na |
| Molecular Weight | 385.37 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) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefprozil Standards
- Cefprozil Δ3 Isomer (CAS 1000980-59-5)
- Cefprozil EP Impurity D (CAS 106447-44-3)
- Cefprozil EP Impurity F (CAS 107937-01-9)
- Cefprozil (2S)-Isomer (CAS 110764-35-7)
- Cefprozil (E)-Isomer monohydrate (CAS 111900-24-4)
- Cefprozil (Z)-Isomer monohydrate (CAS 114876-72-1)
- Cefprozil Impurity 46 (CAS 120709-09-3)
- Cefprozil Monohydrate (CAS 121123-17-9)
Recommended Standards
- tert-butyl (2R)-2-tert-butylpiperazine-1-carboxylate (CAS 1382035-40-6)
- N-benzyl-1-(2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methanamine (CAS 2164-42-3)
- (1s)-1-Phenylpentan-1-ol (CAS 33652-83-4)
- 1-(Cyclopropylmethyl)-4-hydroxy-6-methylpyridin-2-one (CAS 893724-94-2)
- 2-Methyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridin-3(2H)-one (CAS 1215484-46-0)
- 2-(4-(2-(4-Bromo-2-chlorophenoxy)ethyl)piperazin-1-yl)ethanol (CAS 1704074-29-2)
- 1-Butyl-5-methyl-3-nitro-1H-pyrazole (CAS 1020724-13-3)
- 2-Phenoxy-N-(4-(pyridin-4-yl)thiazol-2-yl)propanamide (CAS 878923-20-7)
- 1-{[2-(Trifluoromethyl)phenyl]methyl}-1H-pyrazol-3-amine (CAS 1177281-31-0)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com