4-Chloro-3-isopropoxythiophene-2-carboxylic acid CAS 1774902-71-4
| CAS No. | 1774902-71-4 |
| Molecular Formula | C8H9ClO3S |
| Molecular Weight | 220.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Chloro-3-isopropoxythiophene-2-carboxylic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Chloro-3-isopropoxythiophene-2-carboxylic acid (CAS 1774902-71-4), a certified reference material (molecular formula C8H9ClO3S, MW 220.67 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 4-Chloro-3-isopropoxythiophene-2-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 220.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 4-Chloro-3-isopropoxythiophene-2-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 | C8H9ClO3S |
| Molecular Weight | 220.67 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-4-(2-fluorophenyl)-1-methylbenzene (CAS 1214378-09-2)
- 5-Chloro-3-propoxythiophene-2-carboxylic acid (CAS 1392233-78-1)
- (2-Chloro-6-(methylsulfonyl)phenyl)methanol (CAS 1549395-22-3)
- Methyl 4-chloro-3-ethoxythiophene-2-carboxylate (CAS 1708401-29-9)
- 5-Chloro-4-isopropoxythiophene-2-carboxylic acid (CAS 1779121-96-8)
- 5-Chloro-3-isopropoxythiophene-2-carboxylic acid (CAS 1779122-99-4)
- Methyl 5-chloro-3-ethoxythiophene-2-carboxylate (CAS 181063-66-1)
- (2-Chloro-4-methanesulfonylphenyl)methanol (CAS 181300-40-3)
Recommended Standards
- 2-Chloroethyl benzenesulfonate (CAS 16670-48-7)
- (3-Methoxyphenyl)methanesulfonyl chloride (CAS 163295-76-9)
- 2-Hydroxy-4,5-dimethylbenzene-1-sulfonyl chloride (CAS 1806537-13-2)
- 1-(Chloromethoxy)-4-methanesulfonylbenzene (CAS 1538084-42-2)
- (2-Methoxythiophen-3-yl)(phenyl)methanol (CAS 944670-77-3)
- 5,5’-(pyridine-3,5-diyl)diisophthalic acid (CAS 1433029-60-7)
- 4-(1-Bromoethyl)-2-chloro-1-methoxybenzene (CAS 191092-37-2)
- tert-Butyl (2R)-2-benzyl-4-oxopiperidine-1-carboxylate (CAS 1212391-70-2)
- Saxagliptin Impurity 25 (CAS 2094-74-8)
- 7-(1-methyl-1H-pyrazol-4-yl)-1,2,3,4-tetrahydro-1,8-naphthyridine (CAS 1955548-46-5)
- 6,7-Dihydroxy-benzofuran-3-one (CAS 6272-27-1)
- 1-Benzyl3-ethylpyrrolidine-1,3-dicarboxylate (CAS 848413-99-0)
- Methyl 3-(4-fluorophenyl)-4-oxo-3,4-dihydrophthalazine-1-carboxylate (CAS 339021-34-0)
- Palmitoyl Tripeptide-8 TFA salt (CAS 936544-53-5)
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