Ethyl 2-amino-5-cyclopentylthiophene-3-carboxylate CAS 158461-01-9
| CAS No. | 158461-01-9 |
| Molecular Formula | C12H17NO2S |
| Molecular Weight | 239.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ethyl 2-amino-5-cyclopentylthiophene-3-carboxylate (C12H17NO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 239.33 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Ethyl 2-amino-5-cyclopentylthiophene-3-carboxylate (CAS 158461-01-9), a certified reference material (molecular formula C12H17NO2S, MW 239.33 g/mol) for analytical method development and quality control.
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), Ethyl 2-amino-5-cyclopentylthiophene-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.) | 2002 |
| 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
- 3,3-Dimethyl-6-phenyl-1,2-thiazinane 1,1-dioxide (CAS 1537863-77-6)
- tert-Butyl 3-amino-4-cyclopropylthiophene-2-carboxylate (CAS 1603055-06-6)
- 2-(1-(Thiophen-3-ylmethyl)piperidin-4-yl)acetic acid (CAS 1537688-27-9)
- 3-(3-(Methylsulfonyl)phenyl)piperidine (CAS 160866-61-5)
- 1,1-Dimethylisochroman-4-one (CAS 22954-43-4)
- N-((1-(3-Cyanopyrazin-2-yl)piperidin-4-yl)methyl)-2-oxoimidazolidine-1-carboxamide (CAS 1797286-12-4)
- Ethyl 4-(3-bromopropoxy)benzoate (CAS 74226-00-9)
- 1-(1-((2-(Trimethylsilyl)ethoxy)methyl)-1H-pyrazol-4-yl)ethan-1-one (CAS 1149587-08-5)
- Loxoprofen Impurity 6 (CAS CATO-C4X-14886)
- Azelastine Impurity 51 (CAS CATO-C4X-139651)
- N,N-Dimethyl-L-histidine methyl ester (CAS 170227-64-2)
- Guaifenesin-d3 (CAS 1189924-85-3)
- 5-(4-Chloro-phenyl)-isoxazole-3-carboxylic acid ethyl ester (CAS 29363-97-1)
- Adrenal Peptide E, bovine (CAS 78355-50-7)
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