Orotic Acid Monohydrate CAS 50887-69-9
| CAS No. | 50887-69-9 |
| Molecular Formula | C5H4N2O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Orotic Acid Monohydrate is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Orotic Acid Monohydrate (CAS 50887-69-9), molecular formula C5H4N2O4H2O and molecular weight 174.11 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Orotic Acid Monohydrate (C5H4N2O4H2O) is characterized by a carbohydrate-derived structure, an amide group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
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 | C5H4N2O4 H2O |
| Molecular Weight | 174.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| 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.) | 1971 |
| Nitrogen Atoms | 2 |
Related Orotic Standards
Recommended Standards
- 3-(4-Nitrophenyl)isoxazole-5-carboxylic acid (CAS 899820-05-4)
- 5-Oxohexahydro-1H-pyrrolizine-3-carboxylic acid (CAS 107294-50-8)
- 3-Amino-n-(4-fluorophenyl)propanamide (CAS 938515-70-9)
- (2S,3S)-2-(4-Ethoxyphenyl)-1-ethyl-6-oxopiperidine-3-carboxylic acid (CAS 1212404-60-8)
- 2-(3-Bromo-5-methoxyphenyl)acetic acid (CAS 1261860-69-8)
- 3-((3,4-Dichlorobenzyl)sulfonyl)-N-(4-fluorophenyl)thiophene-2-carboxamide (CAS 251097-77-5)
- 3-Amino-5-trifluoromethyl-pyridine hydrochloride (CAS 1414958-36-3)
- N-Ethyl-N-((3-methoxydibenzo[b,d]furan-4-yl)methyl)ethanamine (CAS 42840-14-2)
- 2-(3-Butoxyphenyl)-6-chloroquinoline-4-carboxylic acid (CAS 932841-45-7)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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