3-Hydroxy-4-iodobenzo[b]thiophene-2-carboxylic acid CAS 1935643-33-6
| CAS No. | 1935643-33-6 |
| Molecular Formula | C9H5IO3S |
| Molecular Weight | 320.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Hydroxy-4-iodobenzo[b]thiophene-2-carboxylic acid (CAS 1935643-33-6), molecular formula C9H5IO3S and molecular weight 320.10 g/mol, is a CATO reference standard with documented purity and traceability.
3-Hydroxy-4-iodobenzo[b]thiophene-2-carboxylic acid (C9H5IO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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).
CATO manufactures 3-Hydroxy-4-iodobenzo[b]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 | C9H5IO3S |
| Molecular Weight | 320.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
Related Hydroxy Standards
- 3-Hydroxy-7-iodobenzo[b]thiophene-2-carboxylic acid (CAS 1934712-87-4)
- 3-Hydroxy-6-iodobenzo[b]thiophene-2-carboxylic acid (CAS 1934760-39-0)
- 3-Hydroxy-5-iodobenzo[b]thiophene-2-carboxylic acid (CAS 1935369-45-1)
- Butyl 2-hydroxy-5-iodobenzoate (CAS 15125-89-0)
- 3-(2-Hydroxy-5-iodo-3-methoxyphenyl)acrylic acid (CAS 773130-44-2)
- 3-(4-Hydroxy-3-iodo-5-methoxyphenyl)acrylic acid (CAS 61223-30-1)
- N-(3-Hydroxy-2-iodopyridin-4-yl)pivalamide (CAS 1142192-39-9)
- Ethyl 3-(3-hydroxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (CAS 2760262-15-3)
Recommended Standards
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- 4-Cyclopropyl-3-fluoro-6-iodo-2-methylbenzoic acid (CAS 2451903-90-3)
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