Clenbuterol EP impurity C CAS 37148-48-4
| CAS No. | 37148-48-4 |
| Molecular Formula | C8H7Cl2NO |
| Molecular Weight | 204.05 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Clenbuterol EP impurity C is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 204.05 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).
Clenbuterol EP impurity C (CAS 37148-48-4) is a certified pharmaceutical impurity reference standard with the molecular formula C8H7Cl2NO and a molecular weight of 204.05 g/mol.
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.
CATO manufactures Clenbuterol EP impurity C 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 | C8H7Cl2NO |
| Molecular Weight | 204.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Clenbuterol Standards
- Clenbuterol EP impurity A (CAS 62909-66-4)
- Clenbuterol impurity 11 (CAS 6953-83-9)
- Clenbuterol Impurity 14 (CAS 37159-31-2)
- Clenbuterol impurity 10 (CAS 100-19-6)
- Clenbuterol Impurity 14 (CAS 38339-09-2)
- Clenbuterol impurity 8 (CAS CATO-C4X-19938)
- Clenbuterol Impurity 16 (CAS 38339-10-5)
- Clenbuterol impurity 12 (CAS CATO-C4X-199312)
Recommended Standards
- Guanfacine Hydrochloride Impurity 2 (CAS 78433-88-2)
- Aripiprazole Impurity N16 (CAS 1260893-49-9)
- Tranexamic Impurity 21 (CAS 195370-52-6)
- 2,4-Dichloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine (CAS 1000578-08-4)
- Everolimus Impurity 32 (CAS CATO-C4X-112232)
- Dapagliflozin Impurity N31 (CAS 2305949-33-9)
- Flurbiprofen Impurity 96 (CAS CATO-C4X-144496)
- 1-Methyl-1,7-diazaspiro[4.4]nonane (CAS 1158749-77-9)
- 2-(Hydroxymethyl)-4-methyl-pentanoic acid (CAS 76789-47-4)
- 3-Chloropyridine-4-methanol (CAS 79698-53-6)
- 2-[2-(3-Nitrophenyl)-2-oxoethoxy]benzamide (CAS 866019-39-8)
- Methyl 5-hydroxy-1-methyl-2-(methylthio)-6-oxo-1,6-dihydropyrimidine-4-carboxylate (CAS 1556811-40-5)
- Fudosteine Impurity 10 (CAS CATO-C4X-144710)
- Semaglutide impurity 260 (CAS CATO-C4X-2226260)
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