2-Sulfoisonicotinic acid CAS 18616-07-4
| CAS No. | 18616-07-4 |
| Molecular Formula | C6H5NO5S |
| Molecular Weight | 203.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Sulfoisonicotinic acid (CAS 18616-07-4), molecular formula C6H5NO5S and molecular weight 203.17 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-Sulfoisonicotinic acid (C6H5NO5S) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 2-Sulfoisonicotinic 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 | C6H5NO5S |
| Molecular Weight | 203.17 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Sulfoisonicotinic Standards
Recommended Standards
- 6-Sulfopicolinic acid (CAS 18616-02-9)
- 7-fluoro-3H,4H,9H-pyrimido[4,5-b]indol-4-one (CAS 1909309-01-8)
- 5-fluoro-2-oxo-3H-1,3-benzoxazole-7-carboxylic acid (CAS 1784316-74-0)
- (1R,2R,3R,5S,6R)-2-Amino-3-Fluorobicyclo[3.1.0]Hexane-2,6-Dicarboxylic Acid (CAS 234085-22-4)
- 4-((5-Bromo-2-fluorobenzylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478256-35-8)
- 1,1'-([1,1'-biphenyl]-4,4'-diyl)bis(2-chloroethan-1-one) (CAS 24860-53-5)
- 1379811-47-8 6-(Chloromethyl)-N-(3-chloro-4-methylphenyl)-1,3,5-triazine-2,4-diamine MFCD22374949 (CAS 1379811-47-8)
- (3aR,4R,7S,7aS)-2-(p-tolyl)-3a,4,7,7a-Tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione (CAS 72657-45-5)
- 1-hydroxycyclopentane-1-carboxamide (CAS 66461-70-9)
- 2-((2-Chlorobenzyl)amino)-2-oxoethyl 2-(methylthio)nicotinate (CAS 475055-13-1)
- 1-Bromo-4-[(2-chloroethyl)sulfanyl]benzene (CAS 16181-14-9)
- N-(4-bromophenyl)-2-((5-(p-tolyl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 332158-09-5)
- Sodium 6-methoxypyridine-3-sulfinate (CAS 1138034-16-8)
- Biotinyl-Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 213779-13-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com