Methylarsonic acid CAS 124-58-3
| CAS No. | 124-58-3 |
| Molecular Formula | CH5AsO3 |
| Molecular Weight | 139.97 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.
Methylarsonic acid (CAS 124-58-3) is a high-purity analytical reference standard with the molecular formula CH5AsO3 and a molecular weight of 139.97 g/mol.
Methylarsonic acid (CH5AsO3) contains an organic framework. It is notably hygroscopic; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
As a certified reference material (CRM), Methylarsonic 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 | CH5AsO3 |
| Molecular Weight | 139.97 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) | -0.5 |
| CAS Registry Year (est.) | 1957 |
Related Methylarsonic Standards
Recommended Standards
- (6-(Methyl)pyridin-3-yl)boronic acid-d3 (CAS 2241875-59-0)
- (2-Methylcyclohex-1-en-1-yl)boronic acid (CAS 1103606-10-5)
- 1-Ethylpyrazole-4-boronic Acid (CAS 847818-56-8)
- (3-methylcyclohex-1-en-1-yl)boronic acid (CAS 1402704-12-4)
- Ethyl 3-methyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate (CAS 1323438-82-9)
- 6-Bromo-2-(pyridin-2-yl)quinoline-4-carbohydrazide (CAS 5114-41-0)
- 3-(3,5-dimethyl-1H-pyrazol-1-yl)piperidine (CAS 1250773-31-9)
- 1-Tetradecylpyridinium Chloride (CAS 2785-54-8)
- (2R,3S,4S,5R,6S)-2-(hydroxymethyl)-6-(prop-2-yn-1-yloxy)tetrahydro-2H-pyran-3,4,5-triol (CAS 151168-60-4)
- Faropenem Impurity 87 (CAS CATO-C4X-128987)
- (<I>R</I>,<I>S</I>)-Bode Kinetic Resolution Catalyst (CAS 1394957-71-1)
- (4-((3,5-Dimethoxybenzyl)oxy)phenyl)boronic acid (CAS 870718-08-4)
- 1-(4-Nitrophenyl)piperidine-4-carbaldehyde (CAS 144872-32-2)
- Semaglutide Impurity 14(Discontinued,See CPTD788307 ) (CAS CATO-C4X-222614)
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