3-(4-Chlorophenyl)-1h-pyrazole-5-carbohydrazide CAS 890012-50-7
| CAS No. | 890012-50-7 |
| Molecular Formula | C10H9ClN4O |
| Molecular Weight | 236.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(4-Chlorophenyl)-1h-pyrazole-5-carbohydrazide 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.
3-(4-Chlorophenyl)-1h-pyrazole-5-carbohydrazide (CAS 890012-50-7), molecular formula C10H9ClN4O and molecular weight 236.66 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 3-(4-Chlorophenyl)-1h-pyrazole-5-carbohydrazide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 236.66 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H9ClN4O |
| Molecular Weight | 236.66 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorophenyl Standards
- 3-(3-Chlorophenyl)-1H-pyrazole-5-carbohydrazide (CAS 1397191-00-2)
- 1-(4-chlorophenyl)-1H-1,2,3-triazole-4-carbaldehyde O-methyloxime (CAS 338419-18-4)
- N2-(2-Chlorophenyl)-1,3,5-triazine-2,4,6-triamine (CAS 30360-11-3)
- 1-[(4-chlorophenyl)methyl]-1h-pyrazole-4-carboxylic acid (CAS 1006452-71-6)
- 1-[(3-chlorophenyl)methyl]-1h-pyrazole-4-carboxylic acid (CAS 1006494-84-3)
- 3-(4-Chlorophenyl)-1-methyl-1H-pyrazole-5-carboxylic Acid (CAS 1015868-48-0)
- 1-(3-Chlorophenyl)-3-methyl-1H-pyrazole-5-carboxylic acid (CAS 1020240-39-4)
- 3-(2-Chlorophenyl)-1-methyl-1H-pyrazole-5-carboxylic acid (CAS 1022508-61-7)
Recommended Standards
- 2-Ethylhexyl pentanoate (CAS 5451-87-6)
- 4-(Chloromethyl)-N-(1H-1,2,4-triazol-3-yl)benzamide (CAS 916791-21-4)
- 5-(4-Chlorophenoxy)pyrimidine-2,4-diamine (CAS 7331-20-6)
- (E)-2-((5-chloro-2-methoxyphenyl)diazenyl)-1H-imidazole (CAS 77636-92-1)
- 5-Amino-1-(2,3-dichlorophenyl)-1H-pyrazole-4-carbonitrile (CAS 73594-95-3)
- 4,4'-(9H-Carbazole-3,6-diyl)dianiline (CAS 1859947-37-7)
- 1-m-Tolyl-1H-benzoimidazole-2-thiol (CAS 438031-49-3)
- N-(2-(1H-pyrazol-1-yl)ethyl)acetamide (CAS 1179470-68-8)
- (R)-1-(2,3,5-Trifluorophenyl)ethanamine (CAS 1241682-91-6)
- 4-Cyclopentylthiazolo[5,4-b]pyridin-5(4H)-one (CAS 1956379-86-4)
- Ethyl (3-nitrophenyl)carbamate (CAS 6275-72-5)
- 2-(Difluoromethyl)-3-hydroxy-4-iodopyridine-6-sulfonamide (CAS 1805538-47-9)
- Aldicarb-Sulfone (CAS 1646-88-4)
- Des-Lys20(Side Chain)-Semaglutide (CAS CATO-C4X-2226280)
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