4-Amino-5-(ethylsulfonyl)-2-methoxybenzoic (ethyl carbonic) Anhydride CAS 71676-03-4
| CAS No. | 71676-03-4 |
| Molecular Formula | C20H24N2O9S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Amino-5-(ethylsulfonyl)-2-methoxybenzoic (ethyl carbonic) Anhydride 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.
4-Amino-5-(ethylsulfonyl)-2-methoxybenzoic (ethyl carbonic) Anhydride (CAS 71676-03-4) is a high-purity analytical reference standard with the molecular formula C20H24N2O9S2C3H6O3 and a molecular weight of 590.62 g/mol.
The molecular framework of 4-Amino-5-(ethylsulfonyl)-2-methoxybenzoic (ethyl carbonic) Anhydride (C20H24N2O9S2C3H6O3) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H24N2O9S2 C3H6O3 |
| Molecular Weight | 590.62 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Amino Standards
- 3-Amino-1-methyl-4-phenoxyindazole (CAS 1000018-07-4)
- 3-Amino-2,6-dibromo-5-ethoxypyridine (CAS 1000018-10-9)
- Methyl 2-amino-5-bromo-4-isopropylbenzoate (CAS 1000018-13-2)
- Methyl 2-amino-3-(pyridin-2-yl)propanoate (CAS 100002-84-4)
- 100005-23-0 2-Amino-4-(4-methoxyphenyl)-5-methylthiophene-3-carbonitrile 7050AC C13H12N2OS (CAS 100005-23-0)
- Methyl 1-amino-4-cyano-1H-pyrrole-2-carboxylate (CAS 1000313-12-1)
- 6-Amino-7-hydroxy-2,3-dihydro-1H-inden-1-one hydrobromide (CAS 1000333-87-8)
- 6-Amino-7-iodo-2,3-dihydro-1H-inden-1-one (CAS 1000333-93-6)
Recommended Standards
- Octadecyl heptanoate (CAS 66009-41-4)
- 2-Chloro-3-fluoro-4-iodo-1-methoxybenzene (CAS 2385211-22-1)
- CAS 432028-02-9 (CAS 432028-02-9)
- Furan-3-ylmethyl ethylcarbamate (CAS 50884-33-8)
- 3-(p-Tolyl)pyridine (CAS 4423-09-0)
- (E)-5-(3,3-dimethylaziridin-2-yl)-3-methylpent-2-en-1-yl acetate (CAS 53415-98-8)
- (3,3-Difluorocyclopentyl)methanamine (CAS 1260790-17-7)
- (6-(Isopropylamino)-2-methylpyridin-3-yl)methanol (CAS 1355200-62-2)
- Methyl 4-(2-hydroxyethoxy)benzoate (CAS 3204-73-7)
- Semaglutide Impurity 16 (CAS CATO-C4X-222616)
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