3-(5-Chlorothiophen-2-yl)-N'-(4-ethylbenzylidene)-1H-pyrazole-5-carbohydrazide CAS 303106-98-1
| CAS No. | 303106-98-1 |
| Molecular Formula | C17H15ClN4OS |
| Molecular Weight | 358.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(5-Chlorothiophen-2-yl)-N'-(4-ethylbenzylidene)-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.
3-(5-Chlorothiophen-2-yl)-N'-(4-ethylbenzylidene)-1H-pyrazole-5-carbohydrazide (CAS 303106-98-1) is a high-purity analytical reference standard with the molecular formula C17H15ClN4OS and a molecular weight of 358.85 g/mol.
3-(5-Chlorothiophen-2-yl)-N'-(4-ethylbenzylidene)-1H-pyrazole-5-carbohydrazide (C17H15ClN4OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H15ClN4OS |
| Molecular Weight | 358.85 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Chlorothiophen Standards
- (3-Chlorothiophen-2-yl)(3-(2,6-dichlorophenyl)isoxazol-4-yl)methanone (CAS 339012-84-9)
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- 5-(((5-Chlorothiophen-2-yl)sulfonyl)methyl)-3-(m-tolyl)-1,2,4-oxadiazole (CAS 1105200-17-6)
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Recommended Standards
- 3-(4-Allyl-5-thioxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)-1-(4-chlorobenzyl)pyridin-2(1H)-one (CAS 400074-99-9)
- 3,5-Dimethyl-2,4,6-tribromophenol (CAS 56759-60-5)
- 3-(4-Allyl-5-thioxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)-1-(3-chlorobenzyl)pyridin-2(1H)-one (CAS 242472-30-6)
- 4-Chloro-N'-methyl-N'-[2-(methylsulfanyl)quinazolin-4-yl]benzohydrazide (CAS 341968-18-1)
- 1-Pentyl-1H-pyrrole-2,5-dione (CAS 19775-00-9)
- Ethyl 1-methylazetidine-2-carboxylate (CAS 42364-44-3)
- 5-Bromo-N-methylpyridine-3-sulfonamide (CAS 173999-19-4)
- N-Phenyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (CAS 949115-03-1)
- Magnoloside D (CAS 1418309-03-1)
- 6-((2-Chlorophenyl)amino)-2-(methylthio)pyrimidine-4-carboxylic acid (CAS 6307-59-1)
- [(4-bromo-2-fluorophenyl)methyl](pyridin-2-ylmethyl)amine dihydrochloride (CAS 1197922-95-4)
- Methyl 2-(1-(2-(1H-indol-3-yl)ethyl)-4-methoxy-2-oxo-1,2-dihydropyridin-3-yl)acetate (CAS 439096-04-5)
- (1-Chloroethyl)triphenylsilane (CAS 103981-16-4)
- His-Cyclic-Semaglutide (CAS CATO-C4X-2226182)
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