N'-(4-(Diethylamino)benzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide CAS 302918-45-2
| CAS No. | 302918-45-2 |
| Molecular Formula | C21H22N6O3 |
| Molecular Weight | 406.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
N'-(4-(Diethylamino)benzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide (C21H22N6O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
N'-(4-(Diethylamino)benzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide (CAS 302918-45-2), molecular formula C21H22N6O3 and molecular weight 406.44 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), N'-(4-(Diethylamino)benzylidene)-3-(3-nitrophenyl)-1H-pyrazole-5-carbohydrazide 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 | C21H22N6O3 |
| Molecular Weight | 406.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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 | 6 |
Related N Standards
- 5-(3-((Diethylamino)methyl)-1-octyl-1H-indol-5-yl)pyrimidin-2-amine (CAS 1443253-20-0)
- Ethyl 5-(2-(2-(diethylamino)-2-oxoacetyl)-1H-pyrrol-1-yl)-1-phenyl-1H-pyrazole-4-carboxylate (CAS 477709-21-0)
- 2,4-Bis[4-(diethylamino)-2-hydroxyphenyl]squaraine (CAS 68842-66-0)
- 2-[2-(7-Diethylamino-2-oxo-2H-chromen-3-yl)-ethyl]-6-methoxy-benzoic acid methyl ester (CAS 365542-81-0)
- (R)-4-((Diethylamino)methyl)-N-(2-methoxyphenethyl)-N-(pyrrolidin-3-yl)benzamide (CAS 947303-87-9)
- 5-(2-(Diethylamino)ethyl)-2-((5-fluoro-2-oxoindolin-3-ylidene)methyl)-3-methyl-1,5,6,7-tetrahydro-4H-pyrrolo[3,2-c]pyridin-4-one (CAS 945380-27-8)
- N1-(3-(Diethylamino)propyl)-N2-(2-phenyl-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)oxalamide (CAS 900009-71-4)
- 4-(4-Diethylamino-benzylidene)-2-methyl-1,2,3,4-tetrahydro-acridine-9-carboxylic acid (CAS 721413-97-4)
Recommended Standards
- Benzylmethyl(2-(pyrrolidin-1-yl)-1-(3-(trifluoromethyl)phenyl)ethyl)carbamate (CAS 675602-69-4)
- Dexamethasone 17-Formyloxy-17-Acid (CAS 473273-04-0)
- Benzyl methyl(2-(pyrrolidin-1-yl)-1-(4-(trifluoromethyl)phenyl)ethyl)carbamate (CAS 675602-73-0)
- Dexamethasone Impurity 61 (CAS CATO-C4X-116561)
- tert-Butyl 2-(2,2-dimethyloxazolidin-3-yl)-2-(tosyloxy)acetate (CAS 140645-28-9)
- -bromopropiophenone 1-benzoyl-1-bromoethane 1-bromoethyl phenyl ketone 2-Bromo-1-phenylpropan-1-one 2-bromo-1-phenyl-1-propanon 2-bromo-propiophenon 2-bromopropiophenone 2114-00-3 alpha-bromoethyl phenyl ketone alpha-methylphenacyl bromide propiophenone, 2-bromo- (CAS 2114-00-3)
- (1r)-1-(2-Bromo-4-chlorophenyl)ethan-1-amine hydrochloride (CAS 2343964-52-1)
- 5-Imino-7-(methylamino)isoquinolin-8(5H)-one (CAS 662167-19-3)
- 4-(3-(2-Methoxyphenyl)-3-methyl-2,5-dioxopyrrolidin-1-yl)benzenesulfonamide (CAS 65116-69-0)
- 2-Amino-2-(piperidin-3-yl)acetic acid (CAS 80546-93-6)
- Methyl 3-(2,2-difluoroethoxy)-5-hydroxybenzoate (CAS 2597914-28-6)
- 2-Chlorofuro[2,3-d]pyrimidine (CAS 918340-55-3)
- 2-[1-(aminomethyl)-3-methylcyclopentyl]acetic acid hydrochloride (CAS 1461713-35-8)
- D-Ala28-Tirzepatide (CAS CATO-CPTD788906)
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