Pyridostigmine Bromide CAS 101-26-8
| CAS No. | 101-26-8 |
| Molecular Formula | C9H13N2O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Pyridostigmine Bromide (CAS 101-26-8), a certified reference material (molecular formula C9H13N2O2Br, MW 261.12 g/mol) for analytical method development and quality control.
Structurally, Pyridostigmine Bromide (C9H13N2O2Br) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 261.12 g/mol, it falls into the medium-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H13N2O2 Br |
| Molecular Weight | 261.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Pyridostigmine Standards
- Pyridostigmine (CAS 155-97-5)
- Pyridostigmine-d3 Bromide (CAS 1633751-00-4)
- Pyridostigmine-d6 Bromide (CAS 2375858-08-3)
- Pyridostigmine EP Impurity B Bromide (CAS 31034-86-3)
- Pyridostigmine Impurity 2 (CAS 4685-07-8(free base))
- Pyridostigmine Bromide EP Impurity A (CAS 51581-32-9)
- Pyridostigmine Bromide Hydroxy Impurity (CAS 587-32-6)
- Pyridostigmine Impurity 3 (CAS 7500-05-2)
Recommended Standards
- (3S,5S)-5-(methoxymethyl)pyrrolidin-3-ol (CAS 1909287-16-6)
- 3-Methoxy-N-methyl-N-((1-phenylpyrrolidin-2-yl)methyl)propan-1-amine fumarate (CAS 142469-88-3)
- 2-(5-(4-Fluorophenyl)isoxazol-3-yl)-N-(4-methylthiazol-2-yl)acetamide (CAS 953137-49-0)
- (S)-1-(4-fluorobenzyl)piperidin-3-amine (CAS 1218039-62-3)
- 2-(2-Methoxy-6-(trifluoromethyl)phenyl)acetonitrile (CAS 1017779-07-5)
- Fluticasone Impurity N1 (CAS 16420-13-6)
- 3-(Pyridin-4-yl)-1H-indol-6-amine (CAS 887615-80-7)
- 4-Hydroxy-N,2,6-trimethylbenzenesulfonamide (CAS 1704069-05-5)
- Ethyl 3-bromo-4-((3-fluorobenzyl)oxy)benzoate (CAS 1706456-85-0)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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