Methyl 4-Amino-5-methylthiophene-2-carboxylate CAS 501082-56-0
| CAS No. | 501082-56-0 |
| Molecular Formula | C7H9NO2S |
| Molecular Weight | 171.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Methyl 4-Amino-5-methylthiophene-2-carboxylate (CAS 501082-56-0), a certified reference material (molecular formula C7H9NO2S, MW 171.22 g/mol) for analytical method development and quality control.
Methyl 4-Amino-5-methylthiophene-2-carboxylate (C7H9NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H9NO2S |
| Molecular Weight | 171.22 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.) | 1984 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 3-Amino-N-(thiazol-2-yl)propanamide (CAS 1016878-45-7)
- 2-Amino-N-ethyl-1,3-thiazole-4-carboxamide (CAS 1019115-37-7)
- Methyl 5-amino-4-methylthiophene-2-carboxylate (CAS 1023655-30-2)
- 3-(2-Amino-1,3-thiazol-4-yl)propanamide (CAS 1105192-78-6)
- 3-Amino-6-ethyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 1206969-66-5)
- Methyl 5-amino-2-methylthiophene-3-carboxylate (CAS 1239942-97-2)
- (S)-3-amino-3-(thiophen-2-yl)propanoic acid (CAS 131829-50-0)
- 2-Amino-N-(thiazol-5-ylmethyl)acetamide (CAS 1353960-83-4)
Recommended Standards
- Methyl 3-Amino-5-methylthiophene-2-carboxylate (CAS 76575-71-8)
- methyl 4-amino-5-methyl-thiophene-3-carboxylate (CAS 81528-48-5)
- Methyl 2-Amino-4-methylthiophene-3-carboxylate (CAS 4651-98-3)
- Methyl 5-(aminomethyl)thiophene-2-carboxylate (CAS 75985-18-1)
- 4-((3-Aminopiperidin-1-yl)methyl)benzoic acid (CAS 1285186-19-7)
- 2-Methyl-1-benzothiophen-5-amine (CAS 157589-58-7)
- 2,6-Dinitrophenyl acetaldehyde (CAS 78283-22-4)
- 5-Methoxy-2-methylisoquinolin-1(2H)-one (CAS 161427-66-3)
- 1-(Furan-3-ylmethyl)-1-(2-methoxyethyl)-3-(thiophen-2-yl)urea (CAS 1421445-21-7)
- 1,2-Bis[2-methylbenzo[b]thiophen-3-yl]-3,3,4,4,5,5-hexafluoro-1-cyclopentene (CAS 137814-07-4)
- (S)-2-Aminohex-5-ynoic Acid (CAS 98891-36-2)
- Suzetrigine Impurity 5 (CAS CATO-C4X-33696)
- 5,8-Difluoro-1,2,3,4-tetrahydroquinoline (CAS 954275-94-6)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
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