1253792-66-3 3210AD 7-(Methylthio)-1-(prop-2-ynyl)-1H-pyrimido-[4,5-d][1,3]oxazine-2,4-dione C10H7N3O3S CAS 1253792-66-3
| CAS No. | 1253792-66-3 |
| Molecular Formula | C10H7N3O3S |
| Molecular Weight | 249.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1253792-66-3 3210AD 7-(Methylthio)-1-(prop-2-ynyl)-1H-pyrimido-[4,5-d][1,3]oxazine-2,4-dione C10H7N3O3S (CAS 1253792-66-3), molecular formula C10H7N3O3S and molecular weight 249.25 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1253792-66-3 3210AD 7-(Methylthio)-1-(prop-2-ynyl)-1H-pyrimido-[4,5-d][1,3]oxazine-2,4-dione C10H7N3O3S (C10H7N3O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 249.25 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).
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 | C10H7N3O3S |
| Molecular Weight | 249.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- PIPES dipotassium salt (CAS 108321-27-3)
- 1-(Benzo[d][1,3]dioxol-5-yl)-3-(4-(4-fluorophenyl)piperazin-1-yl)propan-1-one (CAS 344569-55-7)
- 8-Bromo-3-fluoroquinolin-2(1H)-one (CAS 834883-96-4)
- Ethyl 4-{[2-(3,4-difluorophenoxy)benzyl]amino}benzenecarboxylate (CAS 477887-08-4)
- tert-Butyldiphenyl((3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)allyl)oxy)silane (CAS 521950-38-9)
- 4-Fluoro-2-methyl-3-nitrobenzaldehyde (CAS 861897-59-8)
- 5-Bromo-2-(trifluoromethyl)phenol (CAS 1121585-15-6)
- 2-Chloro-N-(4-fluorobenzyl)-N-methylethan-1-amine (CAS 709-87-5)
- (S)-6-chloro-7-methyl-2-(2-methylpyrrolidin-2-yl)-1H-benzo[d]imidazole Hydrochloride (CAS 1788104-76-6)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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