3-phenyl-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid CAS 1525159-29-8
| CAS No. | 1525159-29-8 |
| Molecular Formula | C13H13N3O2 |
| Molecular Weight | 243.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-phenyl-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-phenyl-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid (CAS 1525159-29-8), molecular formula C13H13N3O2 and molecular weight 243.26 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 3-phenyl-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 243.26 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 3-phenyl-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C13H13N3O2 |
| Molecular Weight | 243.26 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 3 |
Recommended Standards
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- 3-Acetyl-6-(2-methoxyphenyl)pyridin-2(1H)-one (CAS 1517188-98-5)
- (E)-3-(furan-2-yl)-N-(4-methoxyphenyl)acrylamide (CAS 15341-93-2)
- Ethyl 2-(pyrimidin-2-yl)propanoate (CAS 191725-65-2)
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