4-Amino-5-methylthiophene-2-carboxylic acid CAS 748091-32-9
| CAS No. | 748091-32-9 |
| Molecular Formula | C6H7NO2S |
| Molecular Weight | 157.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Amino-5-methylthiophene-2-carboxylic acid (C6H7NO2S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 4-Amino-5-methylthiophene-2-carboxylic acid (CAS 748091-32-9), a certified reference material (molecular formula C6H7NO2S, MW 157.19 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.
CATO manufactures 4-Amino-5-methylthiophene-2-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C6H7NO2S |
| Molecular Weight | 157.19 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.) | 1986 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Amino Standards
- 3-Amino-5-methylthiophene-2-carboxylic acid (CAS 100047-53-8)
- 2-Amino-N-methylthiazole-5-carboxamide (CAS 1177494-20-0)
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Recommended Standards
- 4-Amino-2-(methylthio)-1H-imidazole-5-carbaldehyde (CAS 59153-29-6)
- 4-Amino-5-methylthiophene-3-carboxylic acid (CAS 66319-09-3)
- 4,5-Dimethylthiazole-2-carboxylic Acid (CAS 79312-41-7)
- 4-Aminobenzenesulfinic acid (CAS 7472-15-3)
- 3-Chloro-N-(4-fluorophenyl)-5-(trifluoromethyl)-2-pyridinamine (CAS 1219976-66-5)
- Heptafluorobutyryl bromide (CAS 375-13-3)
- 6-Cyclopropyl-2-imino-2,3-dihydropyrimidin-4(1h)-one (CAS 21573-08-0)
- Belumosudil Impurity 62 (CAS CATO-C4X-298862)
- Azocan-4-ol (CAS 2010091-31-1)
- 3-(4-Chlorophenyl)-2-thioxo-1,3-thiazinan-4-one (CAS 52167-15-4)
- 2-methyl-6-(trifluoromethyl)imidazo[2,1-b][1,3]thiazole-5-carbaldehyde (CAS 865081-55-6)
- 2-Methyl-2-phenylpropane-1-sulfonyl chloride (CAS 125125-33-9)
- (S)-2,4,5-Tris(benzoylamino)-4-pentenoic Acid Methyl Ester (CAS 78420-23-2)
- (Des-Thr?)-Glucagon trifluoroacetate salt (CAS 1802078-27-8)
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