5-Amino-2-(3-chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one CAS 54178-29-9
| CAS No. | 54178-29-9 |
| Molecular Formula | C9H8ClN3O |
| Molecular Weight | 209.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 5-Amino-2-(3-chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 54178-29-9), a certified reference material (molecular formula C9H8ClN3O, MW 209.63 g/mol) for analytical method development and quality control.
Structurally, 5-Amino-2-(3-chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one (C9H8ClN3O) 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 209.63 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 5-Amino-2-(3-chlorophenyl)-2,4-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 | C9H8ClN3O |
| Molecular Weight | 209.63 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.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Amino Standards
- 3-Amino-1-(4-chlorophenyl)-4,5-dihydro-1h-pyrazol-5-one (CAS 10050-12-1)
- 1-(4-Amino-6-chloro-1H-indazol-1-yl)ethanone (CAS 1010102-86-9)
- 1-(5-Amino-3-chloro-1H-indazol-1-yl)ethanone (CAS 1203897-92-0)
- 7-amino-4-(chloromethyl)-1,2-dihydro-1,8-naphthyridin-2-one (CAS 130056-88-1)
- 3-Amino-2-chloro-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 1365987-26-3)
- 2-Amino-4-chloro-6-methoxyquinazoline (CAS 1379296-48-6)
- 2-Amino-4-chloro-7-methoxyquinazoline (CAS 181871-75-0)
- 1-(2-Amino-1H-benzo[d]imidazol-1-yl)-2-chloroethanone (CAS 344413-06-5)
Recommended Standards
- 5-[(4-chlorophenyl)methyl]-1,3,4-oxadiazol-2-amine (CAS 500867-12-9)
- 5-Amino-2-chlorobenzene-1-sulfonyl fluoride (CAS 1996-50-5)
- 5-[(2-chlorophenyl)methyl]-1,3,4-oxadiazol-2-amine (CAS 862574-66-1)
- 5-Amino-4-(4-chlorophenyl)-1H-pyrazol-3(2H)-one (CAS 62538-19-6)
- 2-Ethylhexyl octanoate (CAS 63321-70-0)
- 2-(3-Fluoro-2-methylphenyl)pentan-2-ol (CAS 1379354-99-0)
- 1-(Dichloromethyl)-4-iodobenzene (CAS 467471-79-0)
- 5-Bromoisothiazole-3-carboxylic acid (CAS 4576-89-0)
- Methyl 3-{[(2,7-dimethylpyrazolo[1,5-a]pyrimidin-6-yl)carbonyl]amino}-2-thiophenecarboxylate (CAS 691868-60-7)
- 4-(3-Chloropropoxy)benzaldehyde (CAS 82625-25-0)
- N-(2-(4-cyclohexylphenoxy)ethyl)acetamide (CAS 282104-64-7)
- 4-chloro-1-methyl-pyrazolo[4,3-c]pyridine-6-carbonyl chloride (CAS 2633010-65-6)
- 2-(2,5-Dimethoxyphenyl)-2-methyloxirane (CAS 75632-56-3)
- Galanin-Like Peptide (porcine) trifluoroacetate salt (CAS 245114-96-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com