(4Z)-4-[2-(3-Methoxyphenyl)hydrazin-1-ylidene]-4,5-dihydro-1H-pyrazol-5-one CAS 338416-89-0
| CAS No. | 338416-89-0 |
| Molecular Formula | C10H10N4O2 |
| Molecular Weight | 218.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4Z)-4-[2-(3-Methoxyphenyl)hydrazin-1-ylidene]-4,5-dihydro-1H-pyrazol-5-one (CAS 338416-89-0) is a high-purity analytical reference standard with the molecular formula C10H10N4O2 and a molecular weight of 218.21 g/mol.
Structurally, (4Z)-4-[2-(3-Methoxyphenyl)hydrazin-1-ylidene]-4,5-dihydro-1H-pyrazol-5-one (C10H10N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 218.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), (4Z)-4-[2-(3-Methoxyphenyl)hydrazin-1-ylidene]-4,5-dihydro-1H-pyrazol-5-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 | C10H10N4O2 |
| Molecular Weight | 218.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Related Z Standards
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- 4-(4-Methoxyphenyl)-1H-pyrazole-3-carboxylic acid (CAS 110356-26-8)
- 1-(4-methoxyphenyl)-1H-pyrazole-3-carboxylic acid (CAS 1152534-54-7)
- 1-(3-Methoxyphenyl)-1H-pyrazole-3-carboxylic acid (CAS 1152536-76-9)
- 6-(2-Methoxyphenyl)pyrimidine-2,4(1H,3H)-dione (CAS 116137-74-7)
- 1-(3-Methoxyphenyl)-1H-pyrazole-4-carboxylic acid (CAS 1177350-90-1)
- 3-(4-Methoxyphenyl)pyrimidine-2,4(1H,3H)-dione (CAS 1204296-36-5)
Recommended Standards
- (3S,4S,5R,6R)-6-Acetamido-4,5-dihydroxypiperidine-3-carboxylic acid (CAS 54795-58-3)
- (5-hydroxy-1-phenyl-1H-pyrazol-3-yl)acetic acid (CAS 52546-46-0)
- (3-(Benzo[d][1,3]dioxol-5-yl)isoxazol-5-yl)methanamine (CAS 885273-58-5)
- (5-Oxo-2,5-dihydrofuran-2-yl)methyl benzoate (CAS 85339-35-1)
- 4-(3-Bromo-4-fluorophenyl)-5-chloro-1-ethyl-1H-pyrazolo[3,4-c]pyridazine (CAS 2101298-63-7)
- Ethyl 4-bromo-8-methylquinoline-3-carboxylate (CAS 1242260-83-8)
- (2S,3S,4R,5S)-1-Butyl-2-(Hydroxymethyl)-3,4,5-Piperidinetriol (CAS 441061-44-5)
- 3,7-Dichloro-1-(2-propoxyethyl)pyrido[3,4-b]pyrazin-2(1H)-one (CAS 915307-81-2)
- (3-Methylpyrazine-2,6-diyl)dimethanol (CAS 104670-22-6)
- (5-Bromonicotinoyl)serine (CAS 1397007-19-0)
- 3-Hydroxypropyl hydrogen (3,5-dichlorophenyl)boronate (CAS 73852-37-6)
- 2-(4-(AZIDOMETHYL)PHENYL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE (CAS 1239481-05-0)
- 1,3-Bis(4-methoxyphenyl)imidazo[1,5-a]pyridine (CAS 906668-47-1)
- Semaglutide Impurity 144 (CAS 394210-59-4)
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