1h-1,2,4-Triazole-3-sulfonic acid CAS 13789-27-0
| CAS No. | 13789-27-0 |
| Molecular Formula | C2H3N3O3S |
| Molecular Weight | 149.13 g/mol |
| 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 1h-1,2,4-Triazole-3-sulfonic acid.
CATO supplies 1h-1,2,4-Triazole-3-sulfonic acid (CAS 13789-27-0), a certified reference material (molecular formula C2H3N3O3S, MW 149.13 g/mol) for analytical method development and quality control.
Owing to an amide group, a sulfone group, a carboxylic acid group, an ether linkage, 1h-1,2,4-Triazole-3-sulfonic acid is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 149.13 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.
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 | C2H3N3O3S |
| Molecular Weight | 149.13 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related h Standards
- 2-methyl-1,2,4-triazole-3-carbonyl chloride (CAS 1983185-49-4)
- 1H-1,2,3-triazole-5-sulfonamide (CAS 1935955-30-8)
- 4H-1,2,4-Triazole-3-sulfonyl fluoride (CAS 78201-15-7)
- 14803-99-7 1H-1,2,4-Triazole, 5-(4-pyridyl)- Pyridine, 4-(1H-1,2,4-triazol-5-yl)- 5-(4-Pyridyl)-1H-1,2,4-triazole (CAS 14803-99-7)
- 23195-63-3 1H-1,2,4-Triazole, 5-(3-pyridyl)- Pyridine, 3-(1H-1,2,4-triazol-5-yl)- 5-(3-Pyridyl)-1H-1,2,4-triazole (CAS 23195-63-3)
- 1,1'-(1H-1,2,4-Triazole-3,5-diyl)diethanone (CAS 151675-62-6)
- 1H-1,2,4-Triazole-3,5-dicarboxamide (CAS 111340-55-7)
- 2H-1,2,3-Triazole-4,5-dicarboxamide (CAS 388623-87-8)
Recommended Standards
- 7-Fluoropyrido[2,3-b]pyrazine (CAS 1260657-02-0)
- 1,3,4-Oxadiazole-2-sulfonamide (CAS 90774-48-4)
- 2,4,6-Trifluorotoluene(Methyl D3) (CAS 1208076-21-4)
- 6-Fluoropyrido[3,4-d]pyrimidine (CAS 2089309-98-6)
- 5-Methyl-2-phenyl-1H-indole (CAS 13228-36-9)
- 4-(3,5-Dimethylbenzoyl)quinoline (CAS 1706456-87-2)
- 2-Amino-6-isopropyl-4-(3H)-pyrimidinol (CAS 951625-13-1)
- 3-Ethoxy-1-oxo-1,2,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (CAS 56154-47-3)
- 4-(Difluoromethyl)-1-iodo-2-nitrobenzene (CAS 1261761-33-4)
- 2-((4-Bromobenzyl)thio)-3-ethyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 500143-77-1)
- [2-(Azepan-1-ylcarbonyl)-1-benzofuran-3-yl]amine (CAS 931751-67-6)
- (S)-3,3,3-Trifluoro-2-(((R)-2-hydroxy-1-phenylethyl)amino)propan-1-ol (CAS 1255946-08-7)
- 5-((tert-Butyldimethylsilyl)oxy)pentanal (CAS 87184-80-3)
- Semaglutide Impurity 13 (CAS CATO-C4X-222613)
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