4-chloro-1-methyl-pyrazolo[4,3-c]pyridine-7-carboxylic acid CAS 1780418-96-3
| CAS No. | 1780418-96-3 |
| Molecular Formula | C8H6ClN3O2 |
| Molecular Weight | 211.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-chloro-1-methyl-pyrazolo[4,3-c]pyridine-7-carboxylic acid (C8H6ClN3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
4-chloro-1-methyl-pyrazolo[4,3-c]pyridine-7-carboxylic acid (CAS 1780418-96-3), molecular formula C8H6ClN3O2 and molecular weight 211.61 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 4-chloro-1-methyl-pyrazolo[4,3-c]pyridine-7-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H6ClN3O2 |
| Molecular Weight | 211.61 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chloro Standards
- 5-Chloro-6-methyl-3-nitro-1H-pyrrolo[2,3-b]pyridine (CAS 1000340-15-7)
- 3-Chloro-6-methyl-7-nitro-1H-indazole (CAS 1000342-46-0)
- 3-Chloro-6-methylpyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 1015846-76-0)
- Methyl 5-chloro-1H-imidazo[4,5-b]pyridine-2-carboxylate (CAS 1044772-73-7)
- Methyl 5-chloro-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylate (CAS 1095822-65-3)
- 5-Chloro-7-methyl-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylic acid (CAS 1095822-69-7)
- 7-Chloro-5-methylimidazo[1,2-c]pyrimidine-2-carboxylic acid (CAS 117186-21-7)
- 6-Chloro-N'-hydroxy-1,3-benzoxazole-2-carboximidamide (CAS 1172606-71-1)
Recommended Standards
- Methyl6-chloro-1h-pyrazolo[4,3-c]pyridine-3-carboxylate (CAS 1658461-71-2)
- Methyl 7-chloropyrazolo[1,5-a]pyrimidine-6-carboxylate (CAS 1784507-89-6)
- Methyl 4-chloro-5H-pyrrolo[3,2-d]pyrimidine-7-carboxylate (CAS 1638771-33-1)
- 4-(Chloromethyl)-6-nitro-1H-benzo[d]imidazole (CAS 1804146-20-0)
- Ethyl 2-amino-4-chloro-5-phenylthiophene-3-carboxylate (CAS 1431470-45-9)
- 6-Bromo-N-(1h-pyrazol-3-yl)-2h-chromene-3-carboxamide (CAS 1281310-11-9)
- 4-chloro-1,2-dihydrophthalazine-1-thione (CAS 14062-52-3)
- Methyl 7-Methoxybenzofuran-2-carboxylate (CAS 59254-09-0)
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- (R)-4,12-Bis(4-methoxyphenyl)-[2.2]-paracyclophane(1,5-cyclooctadiene)rhodium(I) (tetrafluoroborate) (CAS 1038932-68-1)
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