(3-Chlorophenyl)phosphonic acid CAS 5431-34-5
| CAS No. | 5431-34-5 |
| Molecular Formula | C6H6ClO3P |
| Molecular Weight | 192.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, (3-Chlorophenyl)phosphonic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.54 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
(3-Chlorophenyl)phosphonic acid (CAS 5431-34-5) is a high-purity analytical reference standard with the molecular formula C6H6ClO3P and a molecular weight of 192.54 g/mol.
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), (3-Chlorophenyl)phosphonic 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 | C6H6ClO3P |
| Molecular Weight | 192.54 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Chlorophenyl Standards
- 2-(3-Chlorophenyl)-2,2-difluoroethan-1-ol (CAS 1195945-24-4)
- 2-(2-Chlorophenyl)-2,2-difluoroethan-1-ol (CAS 1380202-39-0)
- 1-(4-chlorophenyl)-2,2-difluoroethan-1-ol 170653-43-7 (CAS 170653-43-7)
- (S)-1-(3-Chlorophenyl)-2,2-difluoroethan-1-ol (CAS 1821735-36-7)
- 2-(4-Chlorophenyl)-2,2-difluoroethan-1-ol (CAS 207799-86-8)
- 1-(3-Chlorophenyl)-5-methyl-1H-pyrazole (CAS 1247358-87-7)
- 1-(2-Chlorophenyl)-5-methyl-1H-pyrazole (CAS 1247358-96-8)
- 4-(3-Chlorophenyl)-1-methyl-1H-pyrazole (CAS 1266991-19-8)
Recommended Standards
- 5-Chloro-2,4,6-trifluoronicotinonitrile (CAS 24488-20-8)
- 4-Chlorophenylphosphonic acid (CAS 5431-35-6)
- 3-Chloro-2,5,6-trifluoroisonicotinonitrile (CAS 24488-26-4)
- 2-Chloro-4,5-difluorobenzoic acid (CAS 110877-64-0)
- (S)-3,3-dimethyl-1,3-azasilolidine-5-carboxylic acid (CAS 905297-74-7)
- 1-(2-Bromopyridin-3-yl)-2,2,2-trifluoroethan-1-ol (CAS 1092459-51-2)
- 2-(4-Bromo-2-fluorophenyl)-2-chloroacetamide (CAS 1249610-06-7)
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- 2-Aminobenzothioamide (CAS 2454-39-9)
- 2-Iodo-6-methylpyridine-4-sulfonyl chloride (CAS 1393560-21-8)
- NT-COF (CAS 1227264-02-9)
- 4-chloro-2-formyl-benzoic acid (CAS 4657-56-1)
- 1,1,1-Trifluoro-N-((1S,2S)-2-((2-methoxyphenyl)selanyl)-2,3-dihydro-1H-inden-1-yl)methanesulfonamide (CAS 2088566-82-7)
- FLAG Epitope Peptide (CAS 98849-88-8)
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