Ethyl 2-amino-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 70733-08-3
| CAS No. | 70733-08-3 |
| Molecular Formula | C12H17NO2S |
| Molecular Weight | 239.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Ethyl 2-amino-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 70733-08-3) is a high-purity analytical reference standard with the molecular formula C12H17NO2S and a molecular weight of 239.33 g/mol.
Based on its molecular formula C12H17NO2S, Ethyl 2-amino-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 239.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), Ethyl 2-amino-5-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate 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 | C12H17NO2S |
| Molecular Weight | 239.33 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Methyl 2-amino-4-cyclohexylthiophene-3-carboxylate (CAS 10413-33-9)
- Ethyl 2-amino-4,4-dimethyl-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate (CAS 1101857-17-3)
- 2-Amino-2-(4-(tert-butylthio)phenyl)acetic acid (CAS 1336902-75-0)
- Methyl 2-amino-6,6-dimethyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 1340164-13-7)
- Methyl 2-amino-4,5-dimethyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (CAS 1343247-19-7)
- methyl 2-amino-5-cyclohexylthiophene-3-carboxylate (CAS 1350623-54-9)
- Ethyl 2-amino-7-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 1466693-03-7)
- Ethyl 3-((2-amino-5-methylphenyl)thio)propanoate (CAS 1531675-87-2)
Recommended Standards
- Ethyl 2-amino-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate (CAS 40106-13-6)
- Ethyl 2-amino-6-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 76981-71-0)
- Ethyl 2-amino-4-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (CAS 95211-67-9)
- Ethyl 3-amino-3-(4-(methylthio)phenyl)propanoate (CAS 502842-09-3)
- (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(3-(trifluoromethyl)phenyl)butanoic acid (CAS 270065-78-6)
- 2-Amino-6-methoxynicotinamide (CAS 1298123-77-9)
- Isopropyl L-threoninate (CAS 94359-80-5)
- 2-Cyclobutyl-2-phenylethan-1-amine (CAS 1082453-27-7)
- 4-(3-Fluoro-4-methoxyphenyl)pyrrolidin-2-one (CAS 1367113-86-7)
- Rosuvastatin Impurity 76 (CAS CATO-C4X-116976)
- 5-(Chloromethyl)-1,2-dimethyl-1h,7h-pyrazolo[1,5-a]pyrimidin-7-one (CAS 1160246-10-5)
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- 2-(3,4-dichlorophenoxy)-N-methylpropanamide (CAS 1623912-51-5)
- Gastric Inhibitory Polypeptide (human) (CAS 100040-31-1)
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