(2R,3S)-Glycopyrrolate Bromide CAS 129784-12-9
| CAS No. | 129784-12-9 |
| Molecular Formula | C19H28NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (2R,3S)-Glycopyrrolate Bromide.
(2R,3S)-Glycopyrrolate Bromide (CAS 129784-12-9), molecular formula C19H28NO3Br and molecular weight 398.34 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, (2R,3S)-Glycopyrrolate Bromide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 398.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C19H28NO3 Br |
| Molecular Weight | 398.34 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- 2-Nitrophenyl cyclohexanecarboxylate (CAS 496034-10-7)
- 1-Cyclopropyl-7-methyl-1H-indole-3-carbaldehyde (CAS 1350760-52-9)
- 1-Methyl-4-[[5-[[[2-(1-methyl-2-pyrrolidinyl)ethyl]amino]sulfonyl]-2-propoxybenzoyl]amino]-3-propyl-1H-pyrazole-5-carboxamide (CAS 382592-28-1)
- Potassium hexyltrifluoroborate (CAS 446065-12-9)
- Ethyl 2-amino-2-(6-chloropyridin-3-yl)propanoate (CAS 1199793-06-0)
- tert-Butyl (6-methylpyridin-2-yl)carbamate (CAS 90101-22-7)
- N-((1-Isobutyl-1H-pyrazol-5-yl)methyl)-3-isopropoxypropan-1-amine hydrochloride (CAS 1856098-72-0)
- 2-(Difluoromethyl)-4-fluoropyridine-5-acetonitrile (CAS 1806769-61-8)
- 6-(2-Aminoethyl)pyridin-2-amine dihydrochloride (CAS 1332529-09-5)
- Semaglutide impurity 51 (CAS CATO-C4X-222651)
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