N'-(4-Ethoxybenzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide CAS 302918-34-9
| CAS No. | 302918-34-9 |
| Molecular Formula | C19H17N5O4 |
| Molecular Weight | 379.37 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 N'-(4-Ethoxybenzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide.
N'-(4-Ethoxybenzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide (CAS 302918-34-9) is a high-purity analytical reference standard with the molecular formula C19H17N5O4 and a molecular weight of 379.37 g/mol.
Structurally, N'-(4-Ethoxybenzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide (C19H17N5O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 379.37 g/mol, it falls into the moderately-high-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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures N'-(4-Ethoxybenzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide 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 | C19H17N5O4 |
| Molecular Weight | 379.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
Related N Standards
- N'-(2-Ethoxybenzylidene)-2-((4-ethyl-5-phenyl-4H-1,2,4-triazol-3-yl)thio)acetohydrazide (CAS 361165-17-5)
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Recommended Standards
- N-(2-(2-((1H-Indol-3-yl)methylene)hydrazinyl)-2-oxoethyl)-4-methyl-3-nitrobenzamide (CAS 391892-86-7)
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- n-(1-((4-Nitrophenyl)amino)-2-oxo-2-(p-tolyl)ethyl)furan-2-carboxamide (CAS 335421-09-5)
- Tadalafil impurity 127 (CAS CATO-C4X-1087127)
- 4-Aminothiophene-2-carbonitrile hydrochloride (CAS 73781-73-4)
- 2-[2-(4-Fluorophenyl)-4-methyl-1,3-thiazol-5-yl]ethan-1-amine (CAS 1206976-44-4)
- N1,N1-Bis((1H-benzo[d][1,2,3]triazol-1-yl)methyl)-N2,N2-dimethylethane-1,2-diamine (CAS 129410-30-6)
- N,N'-(Octahydro-2,8,4,6-(epibutane[1,2,3,4]tetrayl)naphthalene-2,6-diyl)diacetamide (CAS 55981-63-0)
- Tert-butyl (S)-3-oxohexahydroimidazo[1,5-a]pyrazine-2(3H)-carboxylate (CAS 2306245-79-2)
- 4-Chloro-8-methylcinnoline (CAS 817209-42-0)
- 2-(Naphthalen-1-yl)butan-2-ol (CAS 102238-70-0)
- Dasatinib Impurity 32 (CAS 2468737-83-7)
- Methyl 5-amino-1-(2-methylphenyl)-1H-pyrazole-4-carboxylate (CAS 121716-24-3)
- Rac1 Inhibitor F56, control peptide (CAS 1315378-77-8)
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