Thiophen-2-ylphosphonic acid CAS 113305-47-8
| CAS No. | 113305-47-8 |
| Molecular Formula | C4H5O3PS |
| Molecular Weight | 164.12 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.
Thiophen-2-ylphosphonic acid (CAS 113305-47-8) is a high-purity analytical reference standard with the molecular formula C4H5O3PS and a molecular weight of 164.12 g/mol.
Owing to a sulfone group, a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, Thiophen-2-ylphosphonic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 164.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H5O3PS |
| Molecular Weight | 164.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 1989 |
| Sulfur Atoms | 1 |
Related Thiophen Standards
- 4-(Thiophen-3-ylmethyl)-1H-imidazole (CAS 125883-73-0)
- 1-Methyl-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269292-87-6)
- 1-Methyl-5-(thiophen-2-yl)-1H-pyrazole (CAS 876316-68-6)
- 2-(Thiophen-2-ylmethyl)-1H-imidazole (CAS 945542-70-1)
- 4-Methyl-3-(thiophen-2-yl)-1H-pyrazole (CAS 59843-89-9)
- 4-Methyl-2-(thiophen-2-yl)-1H-pyrrole (CAS 157613-76-8)
- 1-(Thiophen-2-yl)cyclobutane-1-carbonitrile (CAS 28049-65-2)
- 1-(thiophen-2-ylmethyl)-1H-pyrrole (CAS 59303-11-6)
Recommended Standards
- 1-Cyanato-4-nitrobenzene (CAS 1129-38-0)
- 3-(pyrazin-2-yl)-4,5-dihydro-1,2,4-oxadiazol-5-one (CAS 114347-13-6)
- 4-Hydroxy-2-nitrobenzonitrile (CAS 1093203-96-3)
- Oxazolo[5,4-c]pyridine-4-carboxylic acid (CAS 1159830-77-9)
- 3-Methylcinnoline (CAS 17372-78-0)
- (4-(tert-Butoxycarbonyl)-2-chloro-4H-thieno[3,2-b]pyrrol-5-yl)boronic acid (CAS 1430411-10-1)
- 2-(Cyclopropyl(4-methylbenzyl)amino)ethanol (CAS 1249264-80-9)
- 1,2-Difluoro-3-methyl-4-nitrobenzene (CAS 914348-35-9)
- 3-(4-(3,3,3-Trifluoropropyl)piperazin-1-yl)propan-1-amine (CAS 1341136-35-3)
- Furan-3-yl(cis-hexahydropyrrolo[3,4-b]pyrrol-5(1H)-yl)methanone (CAS 1218634-75-3)
- 4-(chloromethyl)-2-methoxy-benzonitrile (CAS 1261618-80-7)
- 3-Amino-1-phenylpyridin-2(1H)-one (CAS 1614217-70-7)
- (S)-2-Amino-N-(1-benzylpyrrolidin-3-yl)-N-cyclopropylacetamide (CAS 1354001-88-9)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com