2-Amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylic acid CAS 899690-79-0
| CAS No. | 899690-79-0 |
| Molecular Formula | C13H13NO4S |
| Molecular Weight | 279.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C13H13NO4S, 2-Amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 279.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-Amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylic acid (CAS 899690-79-0) is a high-purity analytical reference standard with the molecular formula C13H13NO4S and a molecular weight of 279.31 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C13H13NO4S |
| Molecular Weight | 279.31 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 2-Hydroxyphenyl N-benzylsulfamate (CAS 74282-81-8)
- N-{2-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-2,2-difluoroethyl}-N-methyl-N-nitroguanidine (CAS 1823194-81-5)
- 5-(4-Fluorophenyl)-N-((2-morpholinopyridin-4-yl)methyl)oxazole-2-carboxamide (CAS 1798539-01-1)
- 3-(tert-Butoxycarbonyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid (CAS 1447606-00-9)
- (2S,3S,4R,5S,6R)-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2,3,4-triol (CAS 101312-82-7)
- Bromocriptine 2-Methylbutyl Analogue (CAS 157135-98-3)
- 1-([1,2,4]triazolo[4,3-a]pyrazin-8-yl)piperidin-3-amine (CAS 1344005-75-9)
- n-[(dimethyl-1,2-oxazol-4-yl)methyl]-n-methylcyclopentanamine (CAS 1258693-65-0)
- 2-Chloro-N-(4-(dimethylamino)cyclohexyl)-N-ethylacetamide (CAS 1353988-61-0)
- 2-(1-amino-2-methylpropyl)aniline (CAS 574739-92-7)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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