2-((7-Hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)thio)acetic acid CAS 67740-23-2
| CAS No. | 67740-23-2 |
| Molecular Formula | C8H8N4O3S |
| Molecular Weight | 240.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-((7-Hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)thio)acetic acid (CAS 67740-23-2), molecular formula C8H8N4O3S and molecular weight 240.24 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-((7-Hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)thio)acetic acid (C8H8N4O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 240.24 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C8H8N4O3S |
| Molecular Weight | 240.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Hydroxy Standards
- Methyl 7-hydroxy-3-methyl-5-oxo-5h-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 1105189-80-7)
- 4-Hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-Dioxide (CAS 24683-22-5)
- 7-Hydroxy-5-methyl-2-(methylthio)-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 63059-40-5)
- 2-Hydroxy-4-(2-(2-methoxyethoxy)ethoxy)benzaldehyde (CAS 1172635-12-9)
- (2R)-2-hydroxy-1-(2,4,5-trimethoxyphenyl)propan-1-one (CAS 1229005-35-9)
- 2-Hydroxy-4-isopropyl-3,5-dimethoxybenzoic acid (CAS 1352034-26-4)
- 3-Hydroxy-2-phenylchroman-4-one (CAS 1621-55-2)
- (S)-7-Hydroxy-2-phenylchroman-4-one (CAS 2545-13-3)
Recommended Standards
- 1-Methyl-5-(methylthio)-3-(5-nitrofuran-2-yl)-1H-1,2,4-triazole (CAS 61323-54-4)
- 2-(1,1-Dioxido-3-oxo-1,2-benzisothiazol- 2(3H)-yl)acetamide (CAS 30763-03-2)
- {[(4-cyanophenyl)sulfonyl]amino}acetic acid (CAS 214841-99-3)
- 2-(2-Cyanobenzenesulfonamido)acetic acid (CAS 612044-14-1)
- Bis(perfluorophenyl) 2,2'-oxydiacetate (CAS 158573-58-1)
- 2-Amino-1-(3,4,5-trimethoxyphenyl)ethan-1-one (CAS 13079-19-1)
- 1-(2-aminophenyl)-Ethanone-2,2,2-d3 (CAS 1082581-78-9)
- 27888-44-4 C22 Ceramide (d18:1/22:0) (CAS 27888-44-4)
- (2S,4R)-4-(3-fluorobenzyl)pyrrolidine-2-carboxylic acid hydrochloride (CAS 1373512-33-4)
- N-1-Naphthalenyl-1-pentyl-1H-indole-3-carboxamide (CAS 1338925-11-3)
- (r)-1-Phenyl-3-(pyrrolidin-3-yl)urea (CAS 1439894-50-4)
- N-(2-Bromo-4-iodophenyl)acetamide (CAS 474966-95-5)
- Methyl (S)-3-amino-4-(2,4,5-trifluorophenyl)butanoate (CAS 1253056-12-0)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
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