Darunavir impurity 32 CAS CATO-C4X-160632
| CAS No. | CATO-C4X-160632 |
| Molecular Formula | C25H37N3O6S |
| Molecular Weight | 507.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Darunavir impurity 32 (CAS CATO-C4X-160632), a pharmacopoeial impurity reference standard (molecular formula C25H37N3O6S, MW 507.64 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C25H37N3O6S, Darunavir impurity 32 contains a flavonoid 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 507.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
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 | C25H37N3O6S |
| Molecular Weight | 507.64 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Darunavir Standards
Recommended Standards
- N,N'-(((((4-(tert-butyl)phenyl)sulfonyl)azanediyl)bis(methylene))bis(3,1-phenylene))diacetamide (CAS 866155-45-5)
- 3-Amino-N-(2-ethyl-6-methylphenyl)-4-(4-methoxyphenyl)-6-(p-tolyl)thieno[2,3-b]pyridine-2-carboxamide (CAS 332388-11-1)
- N-(15,16-Dihydroxy-4,7,10,13-tetraoxahexadecyl-D-(+)-biotinamide (CAS 869354-59-6)
- 3-Amino-N-mesityl-4-(2-methoxyphenyl)-6-(p-tolyl)thieno[2,3-b]pyridine-2-carboxamide (CAS 443740-47-4)
- Procaterol Impurity 47 (CAS CATO-C4X-181047)
- Relebactam Impurity 68 (CAS CATO-C4X-214468)
- Hydroxychloroquine Impurity 76 (CAS 91066-18-1)
- 2-Hydroxy-4-methyl-1-naphthaldehyde (CAS 79325-54-5)
- 3-(Benzyloxy)thieno[2,3-b]pyridine-2-carboxylic acid (CAS 152524-93-1)
- (2S)-2-(dimethylamino)butanoic acid (CAS 1448220-61-8)
- tert-Butyl 4-aminonicotinate (CAS 1374849-78-1)
- 2-bromo-2-methylpropanedioic acid diethyl ester 29263-94-3 A819852 diethyl 2-bromanyl-2-methyl-propanedioate (CAS 29263-94-3)
- 3-Fluoro-4-nitrobenzyl chloride (CAS 1260884-97-6)
- Semaglutide (CAS 910463-68-2（free base）)
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