3-Phenyl-4-[(phenylamino)methylidene]-4,5-dihydro-1H-pyrazol-5-one CAS 338975-59-0
| CAS No. | 338975-59-0 |
| Molecular Formula | C16H13N3O |
| Molecular Weight | 263.29 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 3-Phenyl-4-[(phenylamino)methylidene]-4,5-dihydro-1H-pyrazol-5-one.
3-Phenyl-4-[(phenylamino)methylidene]-4,5-dihydro-1H-pyrazol-5-one (CAS 338975-59-0) is a high-purity analytical reference standard with the molecular formula C16H13N3O and a molecular weight of 263.29 g/mol.
Based on its molecular formula C16H13N3O, 3-Phenyl-4-[(phenylamino)methylidene]-4,5-dihydro-1H-pyrazol-5-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 263.29 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C16H13N3O |
| Molecular Weight | 263.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Phenyl Standards
- (R)-7-[(Phenylamino)oxy]-1,4-dioxaspiro[4.5]decan-8-one (CAS 682746-13-0)
- (S)-7-[(Phenylamino)oxy]-1,4-dioxaspiro[4.5]decan-8-one (CAS 844638-47-7)
- 1-Phenyl-4-((phenylamino)methylene)-1H-imidazol-5(4H)-one (CAS 58018-47-6)
- 4-(6-(Phenylamino)pyridin-3-yl)pyrimidin-2-amine (CAS 1227158-52-2)
- 5-Phenyl-3-(phenylamino)cyclohex-2-en-1-one (CAS 36646-79-4)
- Ethyl 2-(2-(phenylamino)thiazol-4-yl)acetate (CAS 453524-57-7)
- Ethyl 2-(2-(phenylamino)thiazol-5-yl)acetate (CAS 948287-40-9)
- 3-Phenyl-5-(phenylamino)isoxazole-4-carbaldehyde (CAS 183666-46-8)
Recommended Standards
- 3-Nitro-4-piperidinobenzenecarbaldehyde O-methyloxime (CAS 383147-13-5)
- 4-(((Furan-2-ylmethyl)amino)methyl)-2,6-dimethoxyphenol (CAS 797030-67-2)
- 3-Methyl-2-phenylquinoline-4-carboxylic acid (CAS 43071-45-0)
- 4-((Naphthalen-2-ylimino)methyl)benzene-1,3-diol (CAS 83919-59-9)
- N-(4-acetylphenyl)-2-chloro-5-nitrobenzamide (CAS 346723-04-4)
- (2S)-2-amino-N-(2-methylpyridin-3-yl)propanamide hydrochloride (CAS 1909293-66-8)
- 2-(3-Phenylpyrrolidin-1-yl)acetic acid (CAS 1083299-34-6)
- 3-(4-Chlorophenyl)oxetan-3-amine hydrochloride (CAS 1245782-61-9)
- 2-Benzyl-6-pyrrolidin-2-yl-pyrazine hydrochloride (CAS 1361113-35-0)
- N-methyl[(2,2,2-trifluoroethyl)sulfanyl]methanimidamide, trifluoromethanesulfonic acid (CAS 1384427-41-1)
- 6-Propylindolin-2-one (CAS 557093-34-2)
- 2-[(2-Acetamidoethyl)amino]-2-methylpropanoic acid (CAS 1250273-86-9)
- (S)-3-[[(S)-1-Phenylethyl]amino]-4,5-dihydro-1H-benzo[b]azepin-2(3H)-one (CAS 197658-50-7)
- D-[Phe]6-Liraglutide (CAS CATO-C4X-199235)
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