5-(4-Chlorophenyl)-1H-pyrazol-3-amine CAS 78583-81-0
| CAS No. | 78583-81-0 |
| Molecular Formula | C9H8ClN3 |
| Molecular Weight | 193.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-(4-Chlorophenyl)-1H-pyrazol-3-amine.
CATO supplies 5-(4-Chlorophenyl)-1H-pyrazol-3-amine (CAS 78583-81-0), a certified reference material (molecular formula C9H8ClN3, MW 193.63 g/mol) for analytical method development and quality control.
Structurally, 5-(4-Chlorophenyl)-1H-pyrazol-3-amine (C9H8ClN3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 193.63 g/mol, it falls into the medium-molecular-weight range. 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).
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), 5-(4-Chlorophenyl)-1H-pyrazol-3-amine 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 | C9H8ClN3 |
| Molecular Weight | 193.63 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorophenyl Standards
- 4-(2-Chlorophenyl)-4-oxobutyronitrile (CAS 135595-17-4)
- 1-(4-chlorophenyl)-1H-pyrazol-4-amine (CAS 14044-28-1)
- 1-(2-chlorophenyl)-1H-pyrazol-4-amine (CAS 14060-57-2)
- 2-(3-Chlorophenyl)-3-oxobutanenitrile (CAS 14123-79-6)
- 1-(2-Chlorophenyl)-1h-pyrazol-5-amine (CAS 14678-96-7)
- 1-(4-Chlorophenyl)-1h-pyrazol-5-amine (CAS 14678-97-8)
- 1-(3-Chlorophenyl)-1h-pyrazol-5-amine (CAS 15001-15-7)
- 3-(4-Chlorophenyl)-4-methyl-4h-1,2,4-triazole (CAS 168968-40-9)
Recommended Standards
- 5-(3-chlorophenyl)-3-methylisoxazole (CAS 457654-04-5)
- 5-(4-Chlorophenyl)-3-methylisoxazole (CAS 4211-87-4)
- 5-(3-Chlorophenyl)-2-methyloxazole (CAS 69163-84-4)
- 5-(Chloromethyl)-2-(1-pyrazolyl)pyridine (CAS 748796-39-6)
- (2S,3R)-3-Amino-2-hydroxyhexanoic acid (CAS 75638-59-4)
- (S)-4,4-Difluoropyrrolidine-2-carboxamide Trifluoroacetate (CAS 1448440-46-7)
- (2E,5E)-5-[(Dimethylamino)methylidene]-3-methyl-2-(nitromethylidene)-1,3-thiazolidin-4-one (CAS 338417-54-2)
- Hydrocortisone EP Impurity N (CAS CATO-C4X-140114)
- 4-chloro-1h-pyrazolo[3,4-b]pyridine-3-carbonitrile (CAS 1936189-92-2)
- 1-Ethyl-4-oxo-1,4-dihydroquinoline-3-sulfonyl chloride (CAS 2169907-32-6)
- Lumateperone Impurity 18 (CAS 1469343-42-7)
- 69505-47-1 (5E)-5-[(3-Hydroxy-4-methoxyphenyl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one DTXSID70362480 (CAS 69505-47-1)
- Fmoc-L-phenylalanine-<SUP>13</SUP>C<SUB>9</SUB>,<SUP>15</SUP>N (CAS 1217455-27-0)
- Peptide Impurity 40 (CAS CATO-CPTD788840)
Why CATO?
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