5-(2-methylpropyl)thiophene-2-carboxylic acid CAS 5681-91-4
| CAS No. | 5681-91-4 |
| Molecular Formula | C9H16O2S |
| Molecular Weight | 188.29 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.
5-(2-methylpropyl)thiophene-2-carboxylic acid (CAS 5681-91-4), molecular formula C9H16O2S and molecular weight 188.29 g/mol, is a CATO reference standard with documented purity and traceability.
5-(2-methylpropyl)thiophene-2-carboxylic acid (C9H16O2S) contains a sulfone group, a carboxylic acid 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.
As a certified reference material (CRM), 5-(2-methylpropyl)thiophene-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 | C9H16O2S |
| Molecular Weight | 188.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related methylpropyl Standards
- 1-(2-Methylpropyl)-1h-indol-5-amine (CAS 1094710-32-3)
- 4-{[(2-methylpropyl)amino]methyl}benzonitrile (CAS 928649-00-7)
- 2-[3-(2-methylpropyl)-1,2,4-oxadiazol-5-yl]acetic acid (CAS 1245534-03-5)
- 2-(2-Methylpropyl)pentanedioic acid (CAS 32806-65-8)
- 3-(2-Methylpropyl)-2,3-dihydro-1h-indol-2-one (CAS 251550-17-1)
- N-(2-methylpropyl)-1H-1,3-benzodiazol-2-amine (CAS 1158606-14-4)
- 2-(2-Methylpropyl)-1,3-thiazolidine-4-carboxylic acid (CAS 215669-71-9)
- (2-Methylpropyl)[(2E)-3-phenylprop-2-en-1-yl]amine (CAS 144608-94-6)
Recommended Standards
- 3,5-Dimethyl-2-phenylthiophene (CAS 57021-49-5)
- 5-(Prop-2-yn-1-ylthio)-1,3,4-thiadiazole-2(3H)-thione (CAS 53918-17-5)
- 2-methyl-3-(5-methylthiophen-2-yl)propanoic acid (CAS 74047-79-3)
- 5-(thiophen-3-yl)pentanoic acid (CAS 20906-04-1)
- Ethyl 4-bromo-3-methyl-1H-indole-6-carboxylate (CAS 1638771-70-6)
- 2-Phenethyl-5-phenylfuran (CAS 1222-76-0)
- Ibuprofen Impurity 45 (CAS 83394-44-9)
- 3-Oxa-8-azabicyclo[3.2.1]octane-2,4-dione (CAS 1314897-88-5)
- 2-(6-amino-2,3-dihydro-1H-indol-1-yl)acetonitrile (CAS 1019555-70-4)
- 2-(4-((8-Bromo-[1,2,4]triazolo[1,5-a]pyridin-2-yl)amino)-1H-pyrazol-1-yl)acetic acid (CAS 2101710-31-8)
- 3,4-(Dibenzyloxy)phenethylamine hydrochloride (CAS 1699-56-5)
- 2,4-Dichloro-3-(difluoromethoxy)benzoyl chloride (CAS 1806349-95-0)
- 3-(2-Chloro-6-fluorophenyl)propanoic acid (CAS 88740-77-6)
- Crustacean Cardioactive Peptide (CAS 107090-96-0)
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