alpha-Ketoglutaric acid potassium salt CAS 997-43-3
| CAS No. | 997-43-3 |
| Molecular Formula | C5H5O5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
alpha-Ketoglutaric acid potassium salt (CAS 997-43-3), molecular formula C5H5O5K and molecular weight 184.19 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, alpha-Ketoglutaric acid potassium salt (C5H5O5K) contains a carbohydrate-derived structure. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 184.19 g/mol, it falls into the medium-molecular-weight range. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C5H5O5 K |
| Molecular Weight | 184.19 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°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.) | 1957 |
Related alpha Standards
- 2-Ketoglutaric Acid-13C1 (CAS 108395-15-9)
- 2-Ketoglutaric acid-d<SUB>6</SUB> (CAS 1173021-86-7)
- alpha-Ketoglutaric acid-[13C2,d2] (CAS 123953-28-6)
- α-Ketoglutaric acid disodium salt dihydrate (CAS 1282616-74-3)
- α-KETOGLUTARIC ACID, DISODIUM SALT 13C4 (CAS 1429051-79-5)
- alpha-Ketoglutaric acid xsodium salt (CAS 17091-15-5)
- α-Ketoglutaric acid sodium salt (CAS 22202-68-2)
- .alpha.-Ketoglutaric acid diethyl ester 5965-53-7 Diethyl 2-oxoglutarate Diethyl oxalpropionate Ethyl ethoxalylpropionate Glutaric acid, diethyl ester NSC-111179 NSC111179 Pentanedioic acid, diethyl ester (CAS 5965-53-7)
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