Pyridostigmine EP Impurity B Bromide CAS 31034-86-3
| CAS No. | 31034-86-3 |
| Molecular Formula | C6H8NO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Pyridostigmine EP Impurity B Bromide (C6H8NOBr) is characterized by an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Pyridostigmine EP Impurity B Bromide (CAS 31034-86-3), a pharmacopoeial impurity reference standard (molecular formula C6H8NOBr, MW 190.04 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Pyridostigmine EP Impurity B Bromide 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 | C6H8NO Br |
| Molecular Weight | 190.04 g/mol |
| Appearance | 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 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Pyridostigmine Standards
- Pyridostigmine Bromide (CAS 101-26-8)
- Pyridostigmine (CAS 155-97-5)
- Pyridostigmine-d3 Bromide (CAS 1633751-00-4)
- Pyridostigmine-d6 Bromide (CAS 2375858-08-3)
- 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)
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- 4-(3-Fluoro-5-morpholinophenyl)-N-(4-(3-morpholino-1H-1,2,4-triazol-1-yl)phenyl)pyrimidin-2-amine (CAS 1128096-64-9)
- 5-bromo-2-(methylamino)pyrimidine-4-carboxylic acid (CAS 937647-22-8)
- (4-Hydrazinylphenyl)methanol hydrochloride (CAS 1030287-86-5)
- N-(2-fluoro-3-nitrophenyl)acetamide (CAS 521074-19-1)
- Methyl 2-(8-bromo-1,3-difluorophenanthren-2-yl)-2-hydroxypropanoate (CAS 843614-83-5)
- Allo-Thr7-Tirzepatide (CAS CATO-CPTD788933)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com