3-Amino-1-(2,5-dichlorophenyl)-1H-pyrazol-5(4H)-one CAS 22123-20-2
| CAS No. | 22123-20-2 |
| Molecular Formula | C9H7Cl2N3O |
| Molecular Weight | 244.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-Amino-1-(2,5-dichlorophenyl)-1H-pyrazol-5(4H)-one (C9H7Cl2N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 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 244.08 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
3-Amino-1-(2,5-dichlorophenyl)-1H-pyrazol-5(4H)-one (CAS 22123-20-2), molecular formula C9H7Cl2N3O and molecular weight 244.08 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 3-Amino-1-(2,5-dichlorophenyl)-1H-pyrazol-5(4H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H7Cl2N3O |
| Molecular Weight | 244.08 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.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Amino Standards
- Methyl 3-amino-5-bromo-2-methylbenzoate (CAS 1000342-11-9)
- 3-Amino-2-(4-bromophenyl)propanoic acid (CAS 1017788-08-7)
- 3-Amino-2-(3-bromophenyl)propanoic acid (CAS 1017788-27-0)
- 2-Amino-5-bromo-3-methylbenzohydrazide (CAS 1049139-87-8)
- 2-Amino-2-(2-bromophenyl)propanoic acid (CAS 1053162-56-3)
- Ethyl 4-amino-2-bromobenzoate (CAS 109098-70-6)
- 2-Amino-5-bromo-N,N-dimethyl-nicotinamide (CAS 1092580-97-6)
- Methyl 4-amino-5-bromo-2-methylbenzoate (CAS 1131588-00-5)
Recommended Standards
- 3-[(N,N-Dimethylsulfamoyl)amino]phenylboronic Acid (CAS 277295-50-8)
- H-p-Bromo-DL-Phe-OH (CAS 14091-15-7)
- 2,6-Dichloro-7-methoxyquinazolin-4-amine (CAS 79025-77-7)
- H-p-Bromo-Phe-OH (CAS 24250-84-8)
- N-Acetyl-9-azido-9-deoxyneuraminic Acid (CAS 76487-51-9)
- 4-(4-Bromophenyl)-2-(cyclopropylamino)-4-oxobutanoic acid (CAS 1024685-41-3)
- 3-Amino-1-(2,3-dihydro-1H-indol-1-yl)-1-propanonehydrochloride (CAS 1220039-03-1)
- 1-Chloro-4-[chloro(difluoro)-methoxy]-2-fluoro-benzene (CAS 1404193-69-6)
- Benzyl cyclopentyl hydrogen phosphate (CAS 56527-14-1)
- 2-(3-((Isopropyl(methyl)amino)methyl)pyrrolidin-1-yl)ethanol (CAS 1353946-99-2)
- Ethyl cis-2-Amino-1-cyclohexanecarboxylate Hydrochloride (CAS 1127-99-7)
- 2-((4-Allyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3-chlorophenyl)acetamide (CAS 578697-46-8)
- Ethyl 2-(bromomethyl)-1-benzofuran-3-carboxylate (CAS 1221725-86-5)
- Semaglutide Impurity 146 (CAS 2645421-68-5)
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