Pyridine-3-sulfonic acid hydrochloride CAS 65520-05-0
| CAS No. | 65520-05-0 |
| Molecular Formula | C5H5NO3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Pyridine-3-sulfonic acid hydrochloride.
Pyridine-3-sulfonic acid hydrochloride (CAS 65520-05-0) is a high-purity analytical reference standard with the molecular formula C5H5NO3SHCl and a molecular weight of 195.62 g/mol.
Pyridine-3-sulfonic acid hydrochloride (C5H5NO3SHCl) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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-sulfonic acid hydrochloride 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 | C5H5NO3S HCl |
| Molecular Weight | 195.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Pyridine Standards
- 2,2'-(Pyridine-2,6-diyl)bis(propan-2-ol) (CAS 100055-21-8)
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- Pyridine, 3,3'-[5',5''-bis[3-(3-pyridinyl)phenyl][1,1':3',1'':3'',1'''-quaterphenyl]-3,3'''-diyl]bis- (CAS 1009033-94-6)
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- Pyridine, 2-chloro-3-methoxy-4-nitro-, 1-oxide (CAS 101664-57-7)
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Recommended Standards
- Methyl 2-(4-(piperidin-1-yl)phenyl)acetate (CAS 26577-55-9)
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-ureidophenyl)propanoic acid (CAS 324017-23-4)
- (S)-4-Benzyl-2-(thiophen-2-yl)-4,5-dihydrooxazole (CAS 149065-75-8)
- 6-Amino-3-(methoxymethyl)benzo[d]oxazol-2(3h)-one (CAS 1478937-72-2)
- Boron-B (CAS 14798-12-0)
- methyl 2H-isoindole-1-carboxylate (CAS 56365-71-0)
- 1-(4-Phenoxyphenyl)ethan-1-amine (CAS 102077-19-0)
- 6-Bromo-7-methylimidazo[1,2-a]pyrimidine-2,5(1H,3H)-dione (CAS 53854-20-9)
- ((3-Iodo-2-methylpropoxy)methyl)benzene (CAS 77397-06-9)
- TAT 14 Peptide (Nrf2 Activator III) (CAS 1362661-34-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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