Potassium 3,4-dicarboxy-2-hydroxybutanoate CAS 205939-59-9
| CAS No. | 205939-59-9 |
| Molecular Formula | C6H7O7 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Potassium 3,4-dicarboxy-2-hydroxybutanoate (CAS 205939-59-9), molecular formula C6H7O7K and molecular weight 230.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carbohydrate-derived structure, Potassium 3,4-dicarboxy-2-hydroxybutanoate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 230.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C6H7O7 K |
| Molecular Weight | 230.21 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2015 |
Related Potassium Standards
- 5''-(3',5'-dicarboxy-[1,1'-biphenyl]-4-yl)-[1,1':4',1'':3'',1''':4''',1''''-quinquephenyl]-3,3'''',5,5''''-tetracarboxylic acid (CAS 1126896-14-7)
- 2,2'-(1,9-Dicarboxy-2-(carboxymethyl)-12-phenyl-11-oxa-2,5,8-triazadodecane-5,8-diyl)diacetic Acid (CAS 113786-33-7)
- 1-[(6S)-6-(4,5-Dicarboxy-1H-1,2,3-triazol-1-yl)-hexahydrofuro[3,2-b]furan-3-yl]-1H-1,2,3-triazole-4,5-dicarboxylic acid (CAS 1292812-23-7)
- 5'''-(3'',5''-Dicarboxy[1,1':4',1''-terphenyl)-4-yl)[1,1':4',1'' :4'',1''':3''',1'''':4'''',1''''':4''''',1''''''-seven Phenyl)-3,3``'''',5,5``''''-tetracarboxylic acid (CAS 1333127-74-4)
- 3,5-Dicarboxy-1-(4-carboxybenzyl)pyridin-1-iumbromide (CAS 1615235-54-5)
- 4-(3′′,5′′-Dicarboxy[1,1′:4′,1′′-terphenyl]-4-yl)-2,6-pyridinedicarboxylic acid (CAS 1627560-82-0)
- Sodium 3,4-dicarboxy-3-hydroxybutanoate (CAS 18996-35-5)
- Ammonium 3,4-dicarboxy-3-hydroxybutanoate (CAS 4450-94-6)
Recommended Standards
- Ethyl 3-amino-3-(tetrahydro-2h-pyran-3-yl)propanoate (CAS 1342165-88-1)
- H-Trp-βNA (CAS 3326-63-4)
- 2,4-Dimethoxy-5-(trifluoromethyl)pyrimidine (CAS 3574-10-5)
- 8-Amino-2-azaspiro[4.5]decan-3-one 2,2,2-trifluoroacetate (CAS 2377031-72-4)
- 6-Bromo-4-methylbenzo[d]oxazole (CAS 2716176-08-6)
- (1-Cyclopentyl-1H-benzo[d]imidazol-5-yl)methanamine (CAS 1267326-50-0)
- Arotinolol Impurity 36 (CAS 52561-15-6)
- 4-Chloro-3-isopropoxythiophene-2-carboxylic acid (CAS 1774902-71-4)
- 6-Bromo-5,7-difluoroindoline-2,3-dione (CAS 1698027-85-8)
- Semaglutide impurity 107 (CAS CATO-C4X-2226107)
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