(±)-Clenbuterol CAS 37148-27-9
| CAS No. | 37148-27-9 |
| Molecular Formula | C12H18Cl2N2O |
| Molecular Weight | 277.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(±)-Clenbuterol (CAS 37148-27-9), molecular formula C12H18Cl2N2O and molecular weight 277.19 g/mol, is a CATO reference standard with documented purity and traceability.
(±)-Clenbuterol (C12H18Cl2N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C12H18Cl2N2O |
| Molecular Weight | 277.19 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Clenbuterol Standards
- (R)-(-)-Clenbuterol (CAS 50306-03-1)
- (S)-(+)-Clenbuterol (CAS 50499-60-0)
- Clenbuterol Impurity 15 (CAS 38339-14-9)
- Clenbuterol EP Impurity B (CAS 69708-36-7)
- Clenbuterol EP impurity E (CAS 37148-47-3)
- Clenbuterol-d9 (CAS 129138-58-5)
- Clenbuterol impurity 12 (CAS CATO-C4X-199312)
- Clenbuterol Impurity 16 (CAS 38339-10-5)
Recommended Standards
- Vilanterol Impurity 43 (CAS CATO-C4X-193543)
- 3,3,3-Trifluoro-N-[(phenylmethoxy)carbonyl]alanine (CAS 10068-52-7)
- Dichlorodi-p-xylylene (CAS 28804-46-8)
- 2,2,2-trifluoroethyl N-(2,3-dihydro-1,4-benzodioxin-6-yl)carbamate (CAS 1087798-34-2)
- 4-Chloro-N-(1H-indazol-4-yl)-3-nitrobenzenesulfonamide (CAS 882748-21-2)
- 2,5-Dioxopyrrolidin-1-yl 3-((2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoate (CAS 91574-36-6)
- Fructo-oligosaccharide (CAS 308066-66-2)
- 6-Propylpyridin-3-ol (CAS 20609-24-9)
- N,N,2,6-Tetramethylpyrimidin-4-amine (CAS 5177-09-3)
- 8-chloropurine (CAS 17587-87-0)
- 2-(Difluoromethyl)-6-iodo-3-(trifluoromethyl)pyridine-4-carboxaldehyde (CAS 1805546-63-7)
- tert-Butyl (4aS,7aS)-octahydropyrrolo[3,4-b]morpholine-6-carboxylate (CAS 1932546-67-2)
- (R)-2-Amino-N-(1-benzylpyrrolidin-3-yl)-N-cyclopropylacetamide (CAS 1353996-68-5)
- Allo-D-Ile27-Tirzepatide (CAS CATO-CPTD788961)
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