2-(4-chlorophenyl)-2H,4H,5H,6H-cyclopenta[c]pyrazol-3-amine CAS 858668-65-2
| CAS No. | 858668-65-2 |
| Molecular Formula | C12H12ClN3 |
| Molecular Weight | 233.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(4-chlorophenyl)-2H,4H,5H,6H-cyclopenta[c]pyrazol-3-amine (CAS 858668-65-2), molecular formula C12H12ClN3 and molecular weight 233.70 g/mol, is a CATO reference standard with documented purity and traceability.
2-(4-chlorophenyl)-2H,4H,5H,6H-cyclopenta[c]pyrazol-3-amine (C12H12ClN3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H12ClN3 |
| Molecular Weight | 233.70 g/mol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chlorophenyl Standards
- 3-(2-Chlorophenyl)-4,5,6,7-tetrahydro-1h-pyrazolo[4,3-c]pyridine (CAS 1177490-17-3)
- [(4-chlorophenyl)(pyrimidin-2-yl)methyl](methyl)amine (CAS 1178951-36-4)
- 1-(4-Chlorophenyl)-N-methyl-1-(pyrazin-2-yl)methanamine (CAS 1183164-38-6)
- 2-(3-Chlorophenyl)-1-(pyrimidin-2-yl)ethan-1-amine (CAS 1183780-05-3)
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- 2-(4-Chlorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine (CAS 1250443-87-8)
- 2-(4-Chlorophenyl)-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridine (CAS 1356825-15-4)
- 3-(4-Chlorophenyl)-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine (CAS 1416438-53-3)
Recommended Standards
- 1H-pyrazolo[4,3-c]pyridine, 3-(3-chlorophenyl)-4,5,6,7-tetrahydro- (CAS 87628-44-2)
- 2-(4-Chlorophenyl)-4,5,6,7-tetrahydro-3H-imidazo[4,5-c]pyridine (CAS 944897-33-0)
- 1,3-Benzothiazole-5-sulfonyl chloride (CAS 227278-83-3)
- 2-(4-Chlorophenyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridine (CAS 89569-59-5)
- N-(4-Hydroxy-2,3,6-trimethylphenyl)formamide (CAS 99075-42-0)
- 6-(tert-Butyldisulfanyl)hexanoic acid (CAS 159552-21-3)
- rel-(6R,6aR,13R,13aS)-2,3,4,6,6a,7,8,9,10,12,13,13a-Dodecahydro-1H-6,13-methanodipyrido[1,2-a:3',2'-e]azocine (CAS 463944-91-4)
- 1H-1,2,3-benzotriazol-5-ylmethanol (CAS 106429-67-8)
- 5H-pyrimido[5,4-b]indole-8-carbaldehyde (CAS 1098855-14-1)
- 6-(Piperidin-1-yl)nicotinonitrile (CAS 501378-38-7)
- tert-Butyl 3-((4-cyanophenyl)sulfonyl)pyrrolidine-1-carboxylate (CAS 887587-78-2)
- Arotinolol Impurity 40 (CAS CATO-C4X-185440)
- N-[(1S,2R)-1-Benzyl-2-hydroxy-2-((2R,4R)-4-hydroxy-pyrrolidin-2-yl)-ethyl]-3-[(R)-2-(4-methyl-thiazol-2-yl)-pyrrolidine-1-carbonyl]-5-oxazol-2-yl-benzamide (CAS 1221263-91-7)
- Polymyxin B nonapeptide (CAS 86408-36-8)
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