Ethyl 5-aminothiophene-2-carboxylate hydrochloride CAS 52205-57-9
| CAS No. | 52205-57-9 |
| Molecular Formula | C7H9NO2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ethyl 5-aminothiophene-2-carboxylate hydrochloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Ethyl 5-aminothiophene-2-carboxylate hydrochloride (CAS 52205-57-9), molecular formula C7H9NO2SHCl and molecular weight 207.67 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H9NO2SHCl, Ethyl 5-aminothiophene-2-carboxylate hydrochloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 207.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C7H9NO2S HCl |
| Molecular Weight | 207.67 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 3-Aminothiophene-2-carboxylic acid hydrochloride (CAS 1016552-72-9)
- 4-Aminothiophene-3-carboxylic acid hydrochloride (CAS 1049777-16-3)
- 5-Aminothiophene-3-carboxylic acid (CAS 116539-01-6)
- Ethyl (2-aminothiophene-3-carbonyl)carbamate (CAS 1171382-99-2)
- Potassium 3-aminothiophene-2-carboxylate (CAS 1210469-45-6)
- 4-Aminothiophene-3-carbonitrile hydrochloride (CAS 121071-72-5)
- 3-Aminothiophene-2-carbonitrile hydrochloride (CAS 122805-71-4)
- 4-Aminothiophene-3-carbaldehyde (CAS 1261658-19-8)
Recommended Standards
- Sinigrin (CAS 3952-98-5)
- Methyl[1,2,4]triazolo[4,3-a]pyrazine-6-carboxylate (CAS 2104523-61-5)
- Methyl 3-amino-4-(phenylamino)benzoate (CAS 514206-06-5)
- 5-(1,5-Dimethyl-1H-pyrazol-4-yl)isoxazole-3-carboxylic acid (CAS 957312-71-9)
- 4-Piperidinethiol, 1-ethyl- (CAS 276863-64-0)
- 4-Methyl-1-(pyridin-4-yl)-3,4-dihydroisoquinoline (CAS 87870-23-3)
- 1-Bromo-2,4-difluoro-5-ethoxybenzene (CAS 900175-11-3)
- Tert-butyl n-(1-methanesulfonylpropan-2-yl)carbamate (CAS 1468756-11-7)
- (2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(2H-1,2,3,4-tetrazol-5-yl)propanoic acid (CAS 1464137-20-9)
- Endo-[Glu]31-Liraglutide (CAS CATO-C4X-199234)
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