Carmoterol hydrochloride CAS 137888-11-0
| CAS No. | 137888-11-0 |
| Molecular Formula | C21H24N2O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Carmoterol hydrochloride (CAS 137888-11-0), a certified reference material (molecular formula C21H24N2O4HCl, MW 404.89 g/mol) for analytical method development and quality control.
Structurally, Carmoterol hydrochloride (C21H24N2O4HCl) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 404.89 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C21H24N2O4 HCl |
| Molecular Weight | 404.89 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Carmoterol Standards
Recommended Standards
- 4-Chlorocyclohexene (CAS 930-65-4)
- Methyl 2-(1,2,3,4-tetrahydroquinolin-6-yl)acetate (CAS 5622-50-4)
- tert-Butyl 4-amino-4-[4-(trifluoromethyl)phenyl]piperidine-1-carboxylate (CAS 1707575-95-8)
- 3-Bromo-4-nitro-1H-indazole-6-carboxylic acid (CAS 885521-11-9)
- 1,2-dimethyl-1H-1,3-benzodiazole-5-carboxylic acid hydrochloride (CAS 1221724-84-0)
- 4-Chloropyridine-2-sulfonyl chloride (CAS 1060809-16-6)
- Furan-3(2H)-one (CAS 3511-31-7)
- Colistin B (CAS 7239-48-7)
- 1-(2-(2-Fluorophenoxy)ethyl)-1H-indole-3-carbaldehyde (CAS 309732-86-3)
- Liraglutide Impurity 22 (CAS 536721-25-2)
Why CATO?
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