4-Chloro-1H-pyrazolo[4,3-c]pyridine CAS 871836-51-0
| CAS No. | 871836-51-0 |
| Molecular Formula | C6H4ClN3 |
| Molecular Weight | 153.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Chloro-1H-pyrazolo[4,3-c]pyridine is closely related to a nitrile group, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Chloro-1H-pyrazolo[4,3-c]pyridine (CAS 871836-51-0), molecular formula C6H4ClN3 and molecular weight 153.57 g/mol, is a CATO reference standard with documented purity and traceability.
4-Chloro-1H-pyrazolo[4,3-c]pyridine (C6H4ClN3) contains a nitrile group, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; 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).
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-1H-pyrazolo[4,3-c]pyridine 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 | C6H4ClN3 |
| Molecular Weight | 153.57 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 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 5-Chloro-7H-pyrrolo[2,3-d]pyrimidine (CAS 1041864-02-1)
- 2-Chloro-1H-imidazo[4,5-b]pyridine (CAS 104685-82-7)
- 6-Chloro-[1,2,4]triazolo[4,3-a]pyridine (CAS 1048913-70-7)
- 3-chloro-[1,2,3]triazolo[1,5-a]pyridine (CAS 1087206-32-3)
- 3-Chloro-5H-pyrrolo[2,3-b]pyrazine (CAS 1111638-10-8)
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- 1-Chloro-4-cyanatobenzene (CAS 1124-59-0)
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Recommended Standards
- 4-Chloro-1H-pyrazolo[3,4-β]pyridine (CAS 29274-28-0)
- 4-Chloro-1H-pyrrolo[2,3-d]pyridazine (CAS 23200-60-4)
- 4-chloro-1H-Imidazo[4,5-c]pyridine (CAS 2770-01-6)
- 4-Chloro-2-hydroxybenzonitrile (CAS 30818-28-1)
- Azanediylbis(ethane-2,1-diyl) bis(undec-10-enoate) (CAS 68052-39-1)
- Bis[(4-n-hexylphenyl)isoquinoline](acetylacetonate)iridium (III) (CAS 435294-13-6)
- 1-(3-Chlorophenyl)-5-phenyl-1H-pyrazole (CAS 299162-79-1)
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Why CATO?
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