Pyridostigmine CAS 155-97-5
| CAS No. | 155-97-5 |
| Molecular Formula | C9H13N2O2 |
| Molecular Weight | 181.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Pyridostigmine is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Pyridostigmine (CAS 155-97-5), a certified reference material (molecular formula C9H13N2O2, MW 181.21 g/mol) for analytical method development and quality control.
Structurally, Pyridostigmine (C9H13N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.5, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 181.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures Pyridostigmine 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 | C9H13N2O2 |
| Molecular Weight | 181.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Pyridostigmine Standards
- Pyridostigmine Impurity 5 (CAS CATO-C4X-26305)
- Pyridostigmine Bromide EP Impurity A (CAS 51581-32-9)
- Pyridostigmine Bromide Hydroxy Impurity (CAS 587-32-6)
- Pyridostigmine Bromide (CAS 101-26-8)
- 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))
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