2-Iodothiophene-3-carboxylic acid CAS 18895-00-6
| CAS No. | 18895-00-6 |
| Molecular Formula | C5H3IO2S |
| Molecular Weight | 254.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 254.05 g/mol gives 2-Iodothiophene-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Iodothiophene-3-carboxylic acid (CAS 18895-00-6), molecular formula C5H3IO2S and molecular weight 254.05 g/mol, is a CATO reference standard with documented purity and traceability.
2-Iodothiophene-3-carboxylic acid (C5H3IO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-Iodothiophene-3-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H3IO2S |
| Molecular Weight | 254.05 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
Related Iodothiophene Standards
- 5-Iodothiophene-3-carboxylic acid (CAS 18895-01-7)
- 3-Iodothiophene-2-carboxylic Acid (CAS 60166-84-9)
- 5-Iodothiophene-2-carboxylic acid (CAS 60166-85-0)
- 2-Iodothiophene-3-carboxamide (CAS 18800-06-1)
- 5-Iodothiophene-3-carboxamide (CAS 18800-08-3)
- 3-Butyl-2-iodothiophene (CAS 135598-02-6)
- Methyl 2-iodothiophene-3-carboxylate (CAS 76360-44-6)
- Methyl 3-Iodothiophene-2-carboxylate (CAS 62353-77-9)
Recommended Standards
- 2-(4-Bromo-3-fluorophenyl)-2,2-difluoroethanamine (CAS 1823995-20-5)
- 3-Bromo-2-ethyl-5-(trifluoromethyl)pyridine (CAS 1823375-76-3)
- (2-Bromo-5-(trifluoromethyl)phenyl)methanamine (CAS 771582-26-4)
- 6-Bromo-2-methyl-3-(trifluoromethyl)aniline (CAS 1807206-14-9)
- 2-chloro-4-(4-methylphenyl)-1,3-thiazole (CAS 3884-32-0)
- 1-Chloro-4-cyclopropoxy-7-fluoroisoquinoline (CAS 1409964-54-0)
- Ethyl 5-fluoropyrimidine-4-carboxylate (CAS 1246632-82-5)
- 2-cyclopropyl-2-[(cyclopropylmethyl)amino]acetamide hydrochloride (CAS 2059932-13-5)
- Chlorphenamine Impurity 69 (CAS CATO-C4X-118869)
- methyl 3-methylimidazo[2,1-b]thiazole-2-carboxylate (CAS 1017273-35-6)
- 2-chloro-N-cyclopropyl-2-(4-fluorophenyl)acetamide (CAS 1248663-82-2)
- O-((1-Phenyl-1H-pyrazol-4-yl)methyl)hydroxylamine (CAS 1517279-56-9)
- methyl 2-[1-(4-aminophenyl)acetamido]acetate (CAS 926272-19-7)
- D-Leu26-Tirzepatide (CAS CATO-CPTD788908)
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