3-Chloro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine CAS 2138386-72-6
| CAS No. | 2138386-72-6 |
| Molecular Formula | C7H9ClN2 |
| Molecular Weight | 156.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-Chloro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine (C7H9ClN2) contains a nitrile group, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 156.61 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3-Chloro-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine (CAS 2138386-72-6), molecular formula C7H9ClN2 and molecular weight 156.61 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H9ClN2 |
| Molecular Weight | 156.61 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 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 2-Chloro-2-phenylethanol (CAS 1004-99-5)
- 6-Chloro-5-ethylpyridin-2-amine (CAS 1004294-54-5)
- 4-Chloro-5-isopropylpyrimidine (CAS 1015846-32-8)
- 6-chloro-1-N-methylbenzene-1,2-diamine (CAS 102074-47-5)
- 2-chloro-3,4-dimethylphenol (CAS 10283-15-5)
- 2-Chloro-4,5,6,7-tetrahydro-1H-benzimidazole (CAS 1049127-52-7)
- 3-Chloro-N,N-dimethylpyridin-2-amine (CAS 1060801-41-3)
- 6-Chloro-N,N-dimethylpyridin-2-amine (CAS 1060801-42-4)
Recommended Standards
- 3-Chloro-4,5,6,7-tetrahydro-2H-indazole (CAS 933747-50-3)
- 3-Chloro-4-methylbenzene-1,2-diamine (CAS 2160-12-5)
- 3-Chloro-2,4-dimethylphenol (CAS 56680-84-3)
- 3-Chloro-4-methylbenzyl alcohol (CAS 39652-32-9)
- 3-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)phenol (CAS 95711-07-2)
- 3-(Oxazol-4-yl)benzaldehyde (CAS 1780800-50-1)
- 7-Chloro-2,4-bis(trifluoromethyl)-1,8-naphthyridine (CAS 106582-41-6)
- 6-Bromo-8-fluoro-1H-quinolin-4-one (CAS 1019016-22-8)
- 6-Phenyl-3',4'-dihydro-1'H-spiro[1,5-dioxane-3,2'-naphthalene]-1'-one (CAS 338404-87-8)
- (S)-Norcotinine (CAS 5980-06-3)
- (5-(Trifluoromethyl)-1,3-phenylene)diboronic acid (CAS 913835-35-5)
- tert-Butyl 6,6-difluoro-2-azaspiro[3.4]octane-2-carboxylate (CAS 1638759-78-0)
- 1-[(4-Propylphenyl)sulfonyl]piperidin-4-one (CAS 1171434-03-9)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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