5-Amino-2-thioxodihydropyrimidine-4,6(1H,5H)-dione CAS 98019-74-0
| CAS No. | 98019-74-0 |
| Molecular Formula | C4H5N3O2S |
| Molecular Weight | 159.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Amino-2-thioxodihydropyrimidine-4,6(1H,5H)-dione is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Amino-2-thioxodihydropyrimidine-4,6(1H,5H)-dione (CAS 98019-74-0) is a high-purity analytical reference standard with the molecular formula C4H5N3O2S and a molecular weight of 159.17 g/mol.
5-Amino-2-thioxodihydropyrimidine-4,6(1H,5H)-dione (C4H5N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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 | C4H5N3O2S |
| Molecular Weight | 159.17 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Amino Standards
- (5-Amino-[1,3,4]thiadiazol-2-yl)-acetic acid (CAS 118863-94-8)
- 2-Acetyl-5-amino-1,2,4-thiadiazol-3(2H)-one (CAS 220966-98-3)
- 2-Amino-4-methyl-5-nitrothiazole (CAS 56682-07-6)
- 3-Acetyl-5-amino-1,3,4-thiadiazol-2(3H)-one (CAS 211388-16-8)
- 4-Amino-1,2,5-thiadiazole-3-carbohydrazide (CAS 6972-14-1)
- 5-Amino-1,3,4-thiadiazole-2-carbohydrazide (CAS 98022-46-9)
- 5-Amino-6-thioxo-dihydro-pyrimidine-2,4-dione (CAS 34771-17-0)
- Methyl 4-amino-1,2,5-thiadiazole-3-carboxylate (CAS 63875-18-3)
Recommended Standards
- 5-(Methylamino)-1,3,4-thiadiazole-2-carboxylic acid (CAS 89033-43-2)
- 5-Methoxy-1,3,4-thiadiazole-2-carboxamide (CAS 85089-86-7)
- 6-(Methylthio)-1,2,4-triazine-3,5(2H,4H)-dione (CAS 31697-20-8)
- 4-(Methylamino)-1,2,5-thiadiazole-3-carboxylic acid (CAS 89033-42-1)
- 2-Butylpiperidin-4-one (CAS 183591-49-3)
- 2-(Trityloxy)ethan-1-ol (CAS 18325-45-6)
- 1-(7-Bromo-4-methyl-3,4-dihydropyrido[2,3-b]pyrazin-1(2H)-yl)-2,2-dimethylpropan-1-one (CAS 1142192-65-1)
- N-(4-chloro-6-(ethylamino)pyrimidin-5-yl)-2-methylpyrimidine-5-carboxamide (CAS 1610703-66-6)
- Flomoxef Impurity 23 (CAS CATO-C4X-138223)
- Cefamandole Impurity 22 (CAS CATO-C4X-122122)
- (R)-2-amino-3-(3-iodophenyl)propanoic acid (CAS 1241677-87-1)
- Aprepitant Impurity 18 (CAS CATO-C4X-114118)
- (4-Amino-2-ethylpyrimidin-5-yl)methanol (CAS 876-21-1)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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