5-Methyl-[1,2,4]triazolo[4,3-a]pyridine CAS 5528-51-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 5528-51-8 |
| Molecular Formula | C18H13N3O2 |
| Molecular Weight | 303.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methyl-[1,2,4]triazolo[4,3-a]pyridine (CAS 5528-51-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C18H13N3O2. Molecular weight: 303.31 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C18H13N3O2 |
| Molecular Weight | 303.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- N-([1,2,4]Triazolo[4,3-b]pyridazin-6-yl)-2,5-dimethylbenzenesulfonamide (CAS 1112017-68-1)
- 2-([1,2,4]Triazolo[4,3-a]pyridin-3-ylthio)-N-(2-cyano-3-methylbutan-2-yl)acetamide (CAS 757203-22-8)
- 4-(4-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)piperidin-1-yl)-4-oxobutanoic acid (CAS 1189749-41-4)
- 4-([1,2,4]Triazolo[1,5-a]pyridin-6-yl)-5-(6-methyl-pyridin-2-yl)-1H-imidazole-2-carbaldehyde (CAS 1352609-91-6)
- 6-Methyl-[1,2,4]triazolo[4,3-b]pyridazin-8-yl 4-methylbenzenesulfonate (CAS 478046-23-0)
- 6-Phenyl-[1,2,4]triazolo[4,3-b]pyridazin-8-ol (CAS 18591-71-4)
- 5-([1,2,4]Triazolo[1,5-a]pyridin-6-yl)-4-methyl-1-(m-tolyl)-1H-imidazol-2(3H)-one (CAS 1043908-08-2)
- 2-((5-Methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl)(octyl)amino)ethanol (CAS 61993-92-8)
Recommended Standards
- 4-Hydroxy-6-(4-methoxyphenyl)-2-phenyl-5-pyrimidinecarbonitrile (CAS 89058-98-0)
- 6-((4-Fluorophenyl)sulfinyl)pyrido[3,2-d]pyrimidine-2,4-diamine (CAS 95096-02-9)
- 4-Hydroxy-2-phenylquinoline-6-sulfonyl fluoride (CAS 31241-71-1)
- 5-Fluoro-2-(piperidin-1-yl)benzoic acid (CAS 1096861-93-6)
- (αS,βS)-β-Phenyl Isoserine HCl (CAS 949459-75-0)
- 3-bromoimidazo[1,2-a]pyridine-8-carboxylic acid (CAS 1116691-26-9)
- 6-Bromo-1-methanesulfonyl-1,2,3,4,5,6-hexahydro-[2,3]bipyridinyl (CAS 1316220-25-3)
- 3-Methyl-5-(1-methylpiperidin-2-yl)pyridin-2(1H)-one (CAS 1352524-98-1)
- (1R,2S)-2-(3-bromophenyl)cyclopropan-1-amine (CAS 1314636-98-0)
- Tirzepatide Impurity 17 (CAS CATO-C4X-324017)
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