3-(3-Mercapto-1H-1,2,4-triazol-5-yl)propanoic acid CAS 125907-88-2
| CAS No. | 125907-88-2 |
| Molecular Formula | C5H7N3O2S |
| Molecular Weight | 173.19 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.
3-(3-Mercapto-1H-1,2,4-triazol-5-yl)propanoic acid (CAS 125907-88-2), molecular formula C5H7N3O2S and molecular weight 173.19 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-(3-Mercapto-1H-1,2,4-triazol-5-yl)propanoic acid (C5H7N3O2S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C5H7N3O2S |
| Molecular Weight | 173.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1992 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Mercapto Standards
- 3-Mercapto-5-oxo-4,5-dihydro-1,2,4-triazine-6-carboxylic acid (CAS 7338-75-2)
- 1-(5-Mercapto-4-methyl-4H-1,2,4-triazol-3-yl)propan-2-ol (CAS 667408-61-9)
- 4-butyl-5-mercapto-4H-1,2,4-triazol-3-ol (CAS 27106-11-2)
- (2-Mercapto-1-propyl-1H-imidazol-5-yl)methanol (CAS 497855-87-5)
- 3-(3-Mercapto-1H-1,2,4-triazol-5-yl)propanamide (CAS 522644-34-4)
- 5-Mercapto-4-methoxy-2-methylpyridazin-3(2H)-one (CAS 105651-74-9)
- 2-Mercapto-5-methoxypyrimidine-4,6-diol (CAS 7421-45-6)
- Ethyl 2-mercapto-1H-imidazole-4-carboxylate (CAS 64038-64-8)
Recommended Standards
- Methyl 5-(hydroxymethyl)thiazole-4-carboxylate (CAS 1259062-02-6)
- 1-Allyl-4-methyl-1,4-azaphosphinane 4-oxide (CAS 1260402-34-3)
- 5-fluoro-1H-pyrazolo[3,4-b]pyridine-3-carbaldehyde (CAS 1256785-09-7)
- 4-(Methylsulfonyl)pyridin-2(1H)-one (CAS 1268519-33-0)
- 5-chloro-3-fluoro-pyridine-2-carbaldehyde (CAS 214055-11-5)
- 2-Phenyl-2-(trifluoromethyl)pyrrolidine (CAS 1269151-41-8)
- 9-Methyl-1H-purine-2,6,8(3H,7H,9H)-trione (CAS 57021-61-1)
- (R)-3-(9H-Fluoren-9-ylmethoxycarbonylamino)-2-(4-chloro-phenyl)-propionic acid (CAS 1280787-14-5)
- 4-methyl-1,2,5-oxadiazole-3-carboxylic acid (CAS 58677-34-2)
- 6-Methylpiperidin-3-ol hydrochloride (CAS 1909326-18-6)
- 1-Isopropyl-4-(phenylsulfonyl)-1,2,3,4-tetrahydroquinoxaline (CAS 6344-74-7)
- 6-Bromo-2-fluoronicotinic acid (CAS 1214345-17-1)
- 2-Chloro-6-hydroxyquinoline-3-carbaldehyde (CAS 741705-20-4)
- Des-Gln19-Tirzepatide (CAS CATO-CPTD788954)
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