O-Desmethyl Astemizole CAS 73736-50-2
Purity >95%In StockPharmaceutical Standards
| CAS No. | 73736-50-2 |
| Molecular Formula | C27H29FN4O |
| Molecular Weight | 444.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
O-Desmethyl Astemizole (CAS 73736-50-2) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C27H29FN4O. Molecular weight: 444.54 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C27H29FN4O |
| Molecular Weight | 444.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related O Standards
- 7-desmethyl centcroman (CAS 84394-36-5)
- N-Desmethyl-N-cyclopentyl cis-ent-Tadalafil (CAS 171488-19-0)
- 4-O-Desmethyl-3-O-acetylpapaveroxine (CAS 1642137-73-2)
- O-Desmethyl Pantoprazole O-Sulfate (CAS 1189856-53-8)
- O-Desmethyl Galanthamine β-D-Glucuronide (CAS 464189-54-6)
- Desmethyl Fondenafil (CAS 147676-79-7)
- Desmethyl Cyclobenzaprine N-β-D-Glucuronide (CAS 67200-84-4)
- O-Desmethyl staurosporin, >98% (CAS 161743-35-7)
Recommended Standards
- Ms-PEG6-THP (CAS 42607-89-6)
- Dronedarone Impurity 36 (CAS CATO-C4X-109236)
- Methyl 2-(cyclohexanecarboxamido)-5-((4-ethoxyphenyl)carbamoyl)-4-methylthiophene-3-carboxylate (CAS 335410-66-7)
- 2-(6-Bromoisochroman-1-yl)acetic acid (CAS 187667-63-6)
- Isobutyryl Chloride (CAS 79-30-1)
- 2-(Aminomethyl)-3-(difluoromethyl)-4-(trifluoromethyl)pyridine-6-methanol (CAS 1361732-88-8)
- Posaconazole impurity 245 (CAS CATO-C4X-1208245)
- N-(3-Methoxypropyl)quinolin-8-amine (CAS 67060-66-6)
- 3-Methoxythiophene-2-carbonyl chloride (CAS 54450-14-5)
- Semaglutide impurity 94 (CAS CATO-C4X-222694)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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