Ethyl 3-amino-5-methylthiophene-2-carboxylate CAS 98593-58-9
| CAS No. | 98593-58-9 |
| Molecular Formula | C8H11NO2S |
| Molecular Weight | 185.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 3-amino-5-methylthiophene-2-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.
Ethyl 3-amino-5-methylthiophene-2-carboxylate (CAS 98593-58-9) is a high-purity analytical reference standard with the molecular formula C8H11NO2S and a molecular weight of 185.24 g/mol.
Ethyl 3-amino-5-methylthiophene-2-carboxylate (C8H11NO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C8H11NO2S |
| Molecular Weight | 185.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 2-Amino-4,5-dimethoxybenzenethiol (CAS 100601-30-7)
- 2-Amino-4-(thiophen-2-yl)butanoic acid (CAS 101861-70-5)
- (2S)-2-amino-4-(thiophen-2-yl)butanoic acid (CAS 1195573-02-4)
- Ethyl 4-amino-5-methylthiophene-2-carboxylate (CAS 1248109-35-4)
- (s)-3-Amino-3-(5-methylthiophen-2-yl)propanoic acid (CAS 1270051-55-2)
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- Ethyl 5-amino-4-methylthiophene-3-carboxylate (CAS 1499649-62-5)
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Recommended Standards
- Ethyl 3-(thiazol-2-yl)propanoate (CAS 64107-60-4)
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- Ethyl 4-amino-2-methylthiophene-3-carboxylate (CAS 768298-63-1)
- Telocinobufagin (CAS 472-26-4)
- 1-(4-Hydroxyphenyl)-2,2-dimethylpropan-1-one (CAS 72569-10-9)
- 4-Hydroxymethyl-1-methyl-2-piperidone (CAS 20845-32-3)
- N-phenyl-2-((5-phenyl-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 81511-63-9)
- 1-(2-Bromoethyl)-4-ethylpiperazine (CAS 1247211-58-0)
- 1-(3,5-Dimethoxyphenyl)-3,3-dimethylazetidin-2-one (CAS 478261-91-5)
- 3-(1,4-Diazepan-1-yl)propan-1-ol (CAS 53427-66-0)
- N-(cyclopropylmethyl)-2-methoxypyridin-3-amine (CAS 1157523-28-8)
- Kaempferol 5,7,4'-trimethyl ether (CAS 1098-92-6)
- Neuroendocrine Regulatory Peptide-1 (rat) (CAS 954420-51-0)
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