5988-53-4 WXS4GY9Q24 Hydroorotic acid, D- UNII-WXS4GY9Q24 Hydroorotic acid D-form [MI] 4-Pyrimidinecarboxylic acid, hexahydro-2,6-dioxo-, (4R)- Hydroorotic acid D-form D-4,5-dihydroorotic acid D-Hydroorotic acid CAS 5988-53-4
| CAS No. | 5988-53-4 |
| Molecular Formula | C5H6N2O4 |
| Molecular Weight | 158.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5988-53-4 WXS4GY9Q24 Hydroorotic acid, D- UNII-WXS4GY9Q24 Hydroorotic acid D-form [MI] 4-Pyrimidinecarboxylic acid, hexahydro-2,6-dioxo-, (4R)- Hydroorotic acid D-form D-4,5-dihydroorotic acid D-Hydroorotic acid (CAS 5988-53-4) is a high-purity analytical reference standard with the molecular formula C5H6N2O4 and a molecular weight of 158.11 g/mol.
5988-53-4 WXS4GY9Q24 Hydroorotic acid, D- UNII-WXS4GY9Q24 Hydroorotic acid D-form [MI] 4-Pyrimidinecarboxylic acid, hexahydro-2,6-dioxo-, (4R)- Hydroorotic acid D-form D-4,5-dihydroorotic acid D-Hydroorotic acid (C5H6N2O4) contains a carbohydrate-derived structure, an amide group. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C5H6N2O4 |
| Molecular Weight | 158.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Recommended Standards
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