Ethyl 5-amino-1-(4-tert-butylphenyl)-1h-pyrazole-4-carboxylate CAS 203123-01-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 203123-01-7 |
| Molecular Formula | C16H21N3O2 |
| Molecular Weight | 287.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 5-amino-1-(4-tert-butylphenyl)-1h-pyrazole-4-carboxylate (CAS 203123-01-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H21N3O2. Molecular weight: 287.36 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C16H21N3O2 |
| Molecular Weight | 287.36 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 5-Amino-4-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-1-phenyl-1H-pyrazol-3(2H)-one (CAS 115596-45-7)
- 5-Amino-6-(3-(dimethylamino)phenyl)-1-naphthonitrile (CAS 1240642-74-3)
- (R)-2-Amino-2’-hydroxy-1,1’-binaphthalene (CAS 137848-28-3)
- Ethyl 5-amino-1-(4-butylphenyl)-1H-pyrazole-4-carboxylate (CAS 1416340-07-2)
- Benzyl (4-amino-1-(cyanomethyl)cyclohexyl)carbamate (CAS 1656989-86-4)
- 2-(5-Amino-4-(methylsulfonyl)-3-(thiophen-2-yl)-1H-pyrazol-1-yl)ethanol (CAS 1707374-83-1)
- (5-Amino-1,3-phenylene)bis(pyrrolidin-1-ylmethanone) (CAS 85236-70-0)
- Ethyl 4-amino-5-mesityl-1-methyl-1H-pyrazole-3-carboxylate (CAS 203870-53-5)
Recommended Standards
- N-((1-(3,4-Dimethylphenyl)-1H-tetrazol-5-yl)methyl)-3-methylbutanamide (CAS 920432-00-4)
- Ethyl 4-(ethylamino)-2,6,8-trimethylquinazoline-7-carboxylate (CAS 89200-74-8)
- N-(1'H,3H-[1,2'-biinden]-2-yl)acetamide (CAS 551930-59-7)
- 2-(4-Chlorophenoxy)butanoic acid (CAS 34385-92-7)
- Ethyl 7-chloro-2,2-dimethylheptanoate (CAS 2570179-39-2)
- 5-(Prop-2-yn-1-ylthio)-1,3,4-thiadiazole-2(3H)-thione (CAS 53918-17-5)
- N-Ethyl-3-phenylpiperazine-1-carboxamide (CAS 1253527-83-1)
- 7-Methyl-8-oxo-5-phenyl-7,8-dihydro-1,7-naphthyridine-6-carboxylic acid (CAS 168542-35-6)
- 5-(m-Tolyl)pyrimidin-4-amine (CAS 39101-40-1)
- D-Leu14-Tirzepatide (CAS CATO-CPTD788920)
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 13829788188 / jacky.chen@cato-chem.com