| CAS No. | 4675-64-3 |
| Molecular Formula | C4H5KO5 |
| Molecular Weight | 172.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Butanedioic acid, 2-hydroxy-, potassium salt (1:1) (CAS 4675-64-3) is a high-purity analytical reference standard with the molecular formula C4H5KO5 and a molecular weight of 172.18 g/mol.
Owing to a carbohydrate-derived structure, Butanedioic acid, 2-hydroxy-, potassium salt (1:1) is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 172.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
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), Butanedioic acid, 2-hydroxy-, potassium salt (1:1) 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.
| Molecular Formula | C4H5KO5 |
| Molecular Weight | 172.18 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.) | 1958 |