[1,2,4]triazolo[1,5-a]pyridine-5-carboxylic acid hydrochloride CAS 1443981-59-6
| CAS No. | 1443981-59-6 |
| Molecular Formula | C7H5N3O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
[1,2,4]triazolo[1,5-a]pyridine-5-carboxylic acid hydrochloride (CAS 1443981-59-6) is a high-purity analytical reference standard with the molecular formula C7H5N3O2HCl and a molecular weight of 199.59 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, [1,2,4]triazolo[1,5-a]pyridine-5-carboxylic acid hydrochloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 199.59 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), [1,2,4]triazolo[1,5-a]pyridine-5-carboxylic acid hydrochloride 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 | C7H5N3O2 HCl |
| Molecular Weight | 199.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related triazolo Standards
- [1,2,4]triazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 1000930-72-2)
- 7-Methyl-[1,2,4]triazolo[1,5-a]pyrimidine-2(1H)-thione (CAS 100114-29-2)
- (6-Phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methanamine (CAS 1002310-51-1)
- 3-Methyl-[1,2,4]triazolo[4,3-a]pyridine (CAS 1004-65-5)
- Methyl [1,2,4]Triazolo[1,5-a]pyridine-7-carboxylate (CAS 1005205-51-5)
- 1-([1,2,4]triazolo[4,3-a]pyridin-3-yl)-3-methylbutan-1-amine (CAS 1016815-84-1)
- 5-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}pentan-1-amine (CAS 1016835-11-2)
- 4-{[1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl}aniline (CAS 1016839-14-7)
Recommended Standards
- n-Cyclopropyl-2-hydroxy-n-methylacetamide (CAS 1247116-47-7)
- 4-(tert-Butyl)-1H-pyrrole-2-carboxylic acid (CAS 847955-92-4)
- N-(2-Formyl-5-methoxy-1H-indol-3-yl)-N,N-dimethylimidoformamide (CAS 1134334-52-3)
- Atrasentan Impurity 113 (CAS 1068157-02-7)
- 2-Pyrrolidinone,5-methyl-4-(2-methylpropyl)-,(4S,5S)-rel- (CAS 850080-17-0)
- Cidofovir uracil analog (CAS 116558-96-4)
- 3-(1-Benzylpiperidin-4-yl)propan-1-amine (CAS 151097-70-0)
- 2-(2-Acetylhydrazineylidene)-2-phenylacetic acid (CAS 80238-38-6)
- 3-Bromo-1,7-naphthyridin-4-amine (CAS 91477-49-5)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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