6-Amino-5-isobutyl-2-thioxo-1,2-dihydropyrimidine-4-carboxylic acid CAS 13164-82-4
| CAS No. | 13164-82-4 |
| Molecular Formula | C9H13N3O2S |
| Molecular Weight | 227.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
6-Amino-5-isobutyl-2-thioxo-1,2-dihydropyrimidine-4-carboxylic acid (CAS 13164-82-4) is a high-purity analytical reference standard with the molecular formula C9H13N3O2S and a molecular weight of 227.28 g/mol.
Structurally, 6-Amino-5-isobutyl-2-thioxo-1,2-dihydropyrimidine-4-carboxylic acid (C9H13N3O2S) 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 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 227.28 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 | C9H13N3O2S |
| Molecular Weight | 227.28 g/mol |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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- (2,3-Diamino-5-(difluoromethyl)pyridin-4-yl)methanol (CAS 1804986-73-9)
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- Semaglutide impurity 93 (CAS CATO-C4X-222693)
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