3-tert-Butoxycarbonylamino-5-(4-ethoxyphenyl) thiophene-2-carboxylic acid CAS 688763-50-0
| CAS No. | 688763-50-0 |
| Molecular Formula | C18H21NO5S |
| Molecular Weight | 363.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-tert-Butoxycarbonylamino-5-(4-ethoxyphenyl) thiophene-2-carboxylic acid (CAS 688763-50-0), molecular formula C18H21NO5S and molecular weight 363.43 g/mol, is a CATO reference standard with documented purity and traceability.
3-tert-Butoxycarbonylamino-5-(4-ethoxyphenyl) thiophene-2-carboxylic acid (C18H21NO5S) contains a flavonoid core, 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).
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 3-tert-Butoxycarbonylamino-5-(4-ethoxyphenyl) thiophene-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 | C18H21NO5S |
| Molecular Weight | 363.43 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related tert Standards
- [4-(tert-butoxycarbonylamino)-4-methyl-cyclohexen-1-yl] trifluoromethanesulfonate (CAS 2138510-40-2)
- 2-tert-Butoxycarbonylamino-3-(4-ethenesulfonylamino-phenyl)-propionic acid (CAS 1807503-78-1)
- 1-(2-tert-Butoxycarbonylamino-ethyl)-4-nitro-1H-pyrazole-3,5-dicarboxylic acid dimethyl ester (CAS 459157-15-4)
- 1020722-07-9 3-(tert-Butoxycarbonylamino)-1-(phenylsulfonyl)indole 7565AC C19H20N2O4S (CAS 1020722-07-9)
- 1020722-09-1 2-(tert-Butoxycarbonylamino)-1-(phenylsulfonyl)indole 7567AC C19H20N2O4S (CAS 1020722-09-1)
- 67385-10-8 [2-(2-tert-Butoxycarbonylamino-ethyldisulfanyl)-ethyl]-carbamic acid tert-butyl ester di-tert-butyl (disulfanediylbis(ethane-2,1-diyl))dicarbamate (CAS 67385-10-8)
- [1-(tert-butoxycarbonylamino)cyclopropyl]methyl 4-methylbenzenesulfonate (CAS 1429913-33-6)
- 5-(2-tert-Butoxycarbonylamino-ethyl)-1-phenyl-1H-pyrazole-4-carboxylic acid methyl ester (CAS 1188338-55-7)
Recommended Standards
- 3-Amino-N-(4-methoxyphenyl)-4-morpholinobenzenesulfonamide (CAS 328028-55-3)
- 4-(2-Methoxyphenyl)-5-((naphthalen-1-yloxy)methyl)-4H-1,2,4-triazole-3-thiol (CAS 917746-68-0)
- 3-Amino-N-(2-methoxyphenyl)-4-(morpholin-4-yl)benzene-1-sulfonamide (CAS 328028-16-6)
- 4-(3-Methoxyphenyl)-5-((naphthalen-1-yloxy)methyl)-4H-1,2,4-triazole-3-thiol (CAS 917746-67-9)
- 2-Methyl-1H-chromeno[2,3-b][1,6]naphthyridine-1,11(2H)-dione (CAS 240799-42-2)
- 1-(Piperidin-4-yl)pyrrolidine-2-carboxamide (CAS 864356-10-5)
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- (2-Methyl-1-piperidinyl)(4-piperidinyl)methanonehydrochloride (CAS 1220031-62-8)
- Peptide YY (3-36) (human) (CAS 123583-37-9)
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