3-Hydroxypyridine-2-sulfonic acid CAS 88511-41-5
| CAS No. | 88511-41-5 |
| Molecular Formula | C5H5NO4S |
| Molecular Weight | 175.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carbohydrate-derived structure, an amide group, a sulfone group, 3-Hydroxypyridine-2-sulfonic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 175.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3-Hydroxypyridine-2-sulfonic acid (CAS 88511-41-5) is a high-purity analytical reference standard with the molecular formula C5H5NO4S and a molecular weight of 175.16 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C5H5NO4S |
| Molecular Weight | 175.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Hydroxypyridine Standards
- 5-Hydroxypyridine-2-sulfonic acid (CAS 139263-48-2)
- 2-Hydroxypyridine-3-sulfonic acid (CAS 6684-45-3)
- 6-Hydroxypyridine-3-sulfonic acid (CAS 6684-46-4)
- 3-Hydroxypyridine-4-sulfonamide (CAS 1076197-13-1)
- 5-Hydroxypyridine-2-sulfonamide (CAS 1243461-98-4)
- 3-hydroxypyridine-2-sulfonamide (CAS 145099-44-1)
- 2-hydroxypyridine-3-sulfonamide (CAS 1566403-08-4)
- 6-Hydroxypyridine-3-sulfonamide (CAS 89322-91-8)
Recommended Standards
- 4-Hydroxy-3-pyridinesulfonic Acid (CAS 51498-37-4)
- 2-Fluoroquinoline-3-carbaldehyde (CAS 224769-43-1)
- 5-Fluoro-1-methyl-1H-pyrrolo[3,2-b]pyridine-3-carbonitrile (CAS 2231676-07-4)
- 2-Amino-6-fluoro-1H-indole-3-carbonitrile (CAS 378236-80-7)
- 1-(5-Bromo-2-methoxyphenyl)cyclobutanecarboxylic Acid (CAS 1260760-96-0)
- 5-Bromo-2-(4-methyl-1-piperidinyl)pyridine (CAS 633283-66-6)
- 5-(Chloromethyl)-3-(2,6-dichlorophenyl)isoxazole (CAS 31007-74-6)
- 4-[(3-Formylindol-1-yl)methyl]benzonitrile (CAS 340319-18-8)
- 3-(propan-2-yl)furan-2-carboxylic acid (CAS 18454-84-7)
- 2-{4-aminopyrrolo[2,1-f][1,2,4]triazin-2-yl}acetonitrile (CAS 2090156-72-0)
- 3-cyanocyclopentane-1-sulfonyl chloride (CAS 1803608-49-2)
- 1-(2-Methoxyethyl)-2,3-dimethyl-1h-indole-5-carboxylic acid (CAS 1036442-64-4)
- 10,10-Bis(pyridin-4-ylmethyl)anthracen-9(10H)-one dihydrochloride (CAS 122955-13-9)
- Des-Leu14-Tirzepatide (CAS CATO-CPTD788959)
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