1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4-((isobutyryloxy)imino)-3,4-dihydropyrimidin-2(1H)-one (Molnupiravir Impurity) CAS 2684302-85-8
| CAS No. | 2684302-85-8 |
| Molecular Formula | C13H19N3O7 |
| Molecular Weight | 329.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C13H19N3O7, 1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4-((isobutyryloxy)imino)-3,4-dihydropyrimidin-2(1H)-one (Molnupiravir Impurity) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 329.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4-((isobutyryloxy)imino)-3,4-dihydropyrimidin-2(1H)-one (Molnupiravir Impurity) (CAS 2684302-85-8), molecular formula C13H19N3O7 and molecular weight 329.31 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C13H19N3O7 |
| Molecular Weight | 329.31 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 3-Nitro-N-(5-sulfamoyl-1,3,4-thiadiazol-2-yl)benzamide (CAS 189033-41-8)
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- (1,5-Dioxa-9-azaspiro[5.5]undecan-9-yl)(3-(trifluoromethyl)phenyl)methanone (CAS 1351588-45-8)
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- Cyphenothrin (CAS 39515-40-7)
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