Pyridine-3-sulfinic acid CAS 101084-77-9
| CAS No. | 101084-77-9 |
| Molecular Formula | C5H5NO2S |
| Molecular Weight | 143.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Pyridine-3-sulfinic acid is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Pyridine-3-sulfinic acid (CAS 101084-77-9), a certified reference material (molecular formula C5H5NO2S, MW 143.16 g/mol) for analytical method development and quality control.
Pyridine-3-sulfinic acid (C5H5NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Pyridine-3-sulfinic acid 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 | C5H5NO2S |
| Molecular Weight | 143.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Pyridine Standards
- Pyridine-4-sulfinic acid (CAS 101084-78-0)
- Pyridine-2-sulfinic acid (CAS 766445-35-6)
- 3-Pyridine-5,6-13C2-carboxylic acid, 5-fluoro- (CAS 780701-97-5)
- Pyridine, 2-(1H-pyrrol-3-yl) (CAS 79560-99-9)
- 3-Pyridine-d (CAS 1035439-74-7)
- 2,6-Pyridine dimethanol (CAS 1195-59-1)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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