5-(5-Bromothiophen-2-yl)-N'-(3-ethoxy-4-hydroxybenzylidene)-1H-pyrazole-3-carbohydrazide CAS 303107-05-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 303107-05-3 |
| Molecular Formula | C17H15BrN4O3S |
| Molecular Weight | 435.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(5-Bromothiophen-2-yl)-N'-(3-ethoxy-4-hydroxybenzylidene)-1H-pyrazole-3-carbohydrazide (CAS 303107-05-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C17H15BrN4O3S. Molecular weight: 435.30 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C17H15BrN4O3S |
| Molecular Weight | 435.30 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-(2,6-Dichlorophenyl)-N-(3,4-dimethoxyphenethyl)-5-methylisoxazole-4-carboxamide (CAS 217317-66-3)
- 7-(2-((1H-benzo[d]imidazol-2-yl)thio)ethyl)-8-bromo-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (CAS 476482-03-8)
- 2,3-Dimethyl-4-thiocyanatophenol (CAS 6186-84-1)
- 2-Chloro-n-[(3-methylthiophen-2-yl)methyl]acetamide (CAS 1306603-04-2)
- (5-(((Tert-butyldimethylsilyl)oxy)methyl)pyridin-3-yl)boronic acid (CAS 173999-08-1)
- 2-(Aminomethyl)quinazolin-4-ol (CAS 437998-08-8)
- Tert-butyl (S)-4-(3-bromophenyl)-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide (CAS 1379546-88-9)
- 5-(4-Morpholinyl)-3-pyridazinol (CAS 21131-06-6)
- Bendamustine impurity 33 (CAS 109882-25-9)
- (Des-Thr7)-Glucagon trifluoroacetate salt (CAS 1802078-28-9)
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