Darunavir Impurity 26 CAS 1418639-27-6
| CAS No. | 1418639-27-6 |
| Molecular Formula | C21H27N3O4S |
| Molecular Weight | 417.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Darunavir Impurity 26 (CAS 1418639-27-6), a pharmacopoeial impurity reference standard (molecular formula C21H27N3O4S, MW 417.52 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Darunavir Impurity 26 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 417.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Darunavir Impurity 26 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 | C21H27N3O4S |
| Molecular Weight | 417.52 g/mol |
| Purity | >95% |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Darunavir Standards
- Darunavir Impurity (CAS 251105-80-3)
- Darunavir impurity 33 (CAS CATO-C4X-160633)
- Darunavir Impurity 14 (CAS CATO-C4X-160614)
- Darunavir Impurity 15 (CAS 192800-79-6)
- Darunavir Impurity 16 (CAS 1402142-62-4)
- Darunavir Intermediate 22 (CAS 169280-56-2)
- Darunavir Impurity 38 (CAS CATO-C4X-160638)
- Darunavir impurity 14, 98% (CAS 143224-62-8)
Recommended Standards
- Duloxetine Impurity 49 (CAS 116817-79-9)
- Tentoxin-d3 (CAS CATO-CCPD103208)
- Duloxetine Impurity 19 (CAS 947686-09-1)
- 4-Bromo-1,2-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]benzene (CAS 1108192-19-3)
- Apixaban Impurity 149 (CAS CATO-C4X-1088149)
- Ertapenem Dimer Form D Impurity (CAS 1199797-41-5)
- Indobufen Impurity 23 (CAS CATO-C4X-179223)
- N-((1,1-Dioxidotetrahydrothiophen-3-yl)methyl)-5-(furan-2-yl)isoxazole-3-carboxamide (CAS 1223617-49-9)
- (S)-benzyl 2-((S)-2-((S)-2-amino-4-phenylbutanamido)-4-methylpentanamido)-3-phenylpropanoate 2,2,2-trifluoroacetate (CAS 875309-83-4)
- 1-(3-Chloro-1,4-dioxo-1,4-dihydronaphthalen-2-yl)piperidine-4-carboxylic acid (CAS 500268-34-8)
- 1-(Imidazo[1,2-a]pyridin-2-ylmethyl)-3-phenylthiourea (CAS 301233-25-0)
- 1-[4-(1,3-Benzothiazol-2-yl)piperazin-1-yl]propan-1-one (CAS 309268-48-2)
- 2-(1-((Benzyloxy)carbonyl)pyrrolidin-3-yl)-2-(methylthio)acetic acid (CAS 1353982-12-3)
- Tau Peptide (301-315) trifluoroacetate salt (CAS 330456-48-9)
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