2-(3,4-Dichlorophenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one CAS 832676-65-0
| CAS No. | 832676-65-0 |
| Molecular Formula | C10H8Cl2N2O |
| Molecular Weight | 243.09 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 2-(3,4-Dichlorophenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one.
2-(3,4-Dichlorophenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one (CAS 832676-65-0) is a high-purity analytical reference standard with the molecular formula C10H8Cl2N2O and a molecular weight of 243.09 g/mol.
Based on its molecular formula C10H8Cl2N2O, 2-(3,4-Dichlorophenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 243.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 2-(3,4-Dichlorophenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one 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 | C10H8Cl2N2O |
| Molecular Weight | 243.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichlorophenyl Standards
- 1-(3,5-Dichlorophenyl)-3-methyl-1H-pyrazol-5(4H)-one (CAS 100553-84-2)
- (1-(2,3-Dichlorophenyl)-1H-1,2,3-triazol-4-yl)methanamine (CAS 1247385-82-5)
- (3,4-Dichlorophenyl)(furan-2-yl)methanol (CAS 1248112-76-6)
- (1-(2,5-Dichlorophenyl)-1H-1,2,3-triazol-4-yl)methanamine (CAS 1248232-33-8)
- (1-(2,4-Dichlorophenyl)-1H-1,2,3-triazol-4-yl)methanamine (CAS 1248967-92-1)
- (3,4-Dichlorophenyl)(furan-3-yl)methanol (CAS 1249678-85-0)
- 2-(2,5-Dichlorophenyl)-5-methyl-2,4-dihydro-3H-pyrazol-3-one (CAS 13102-34-6)
- 1-(3,4-dichlorophenyl)-3-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 13124-17-9)
Recommended Standards
- 2-(2-Chloroethyl)-5-(4-chlorophenyl)-2H-tetrazole (CAS 924858-92-4)
- 2-(bromomethyl)-1,3-difluoro-5-methoxybenzene (CAS 94278-68-9)
- 2-(2,5-Dichlorophenyl)-5-methyl-1,2-dihydro-3H-pyrazol-3-one (CAS 692273-24-8)
- 2-(Dimethylsulfamoyl)-5-methylphenylboronic acid (CAS 2377610-24-5)
- 2-Amino-5-ethylthiazole (CAS 39136-60-2)
- 8-chloro-5-methyl-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-2-one (CAS 32900-23-5)
- α,α-Diethyl-4,4-dihydroxy-hydrobenzoin 4,4-Diacetate (CAS 113136-37-1)
- 2-acetamido-4-methoxy-4-oxobutanoic acid (CAS 111691-92-0)
- 4-Bromo-2-(bromomethyl)thiophene (CAS 79757-98-5)
- (2R,3S,4R,5R)-5-(6-Amino-9H-purin-9-yl)-4-fluoro-2-(hydroxymethyl)tetrahydrofuran-3-ol (CAS 123334-75-8)
- Ethyl 2,4-dimethyl-7-phenylpyrrolo[1,2-a]pyrimidine-8-carboxylate (CAS 338419-86-6)
- Ethyl 2-(1-aminocyclopropyl)acetate hydrochloride (CAS 1554076-31-1)
- N-Methyl-1-(2-methylbenzyl)piperidin-3-amine hydrochloride (CAS 1289387-26-3)
- [α-Glu](Side Chain)-Semaglutide (CAS CATO-C4X-2226159)
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