6-Amino-5-(methylthio)pyrimidin-2(1H)-one CAS 6623-80-9
| CAS No. | 6623-80-9 |
| Molecular Formula | C5H7N3OS |
| Molecular Weight | 157.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H7N3OS, 6-Amino-5-(methylthio)pyrimidin-2(1H)-one contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 157.19 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.
6-Amino-5-(methylthio)pyrimidin-2(1H)-one (CAS 6623-80-9), molecular formula C5H7N3OS and molecular weight 157.19 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C5H7N3OS |
| Molecular Weight | 157.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Amino Standards
- 3-Amino-5-methylthiophene-2-carboxylic acid (CAS 100047-53-8)
- 2-Amino-N-methylthiazole-5-carboxamide (CAS 1177494-20-0)
- 4-Amino-N,1-dimethyl-5-imidazolecarboxamide-d3 (CAS 1189466-51-0)
- 5-Amino-3-methyl-1,2-oxazole-4-carbothioamide (CAS 130783-67-4)
- 5-Amino-4-methylthiophene-2-carboxylic acid (CAS 1368184-83-1)
- 2-Amino-5-methylthiazole-4-carboxamide (CAS 1378861-82-5)
- 2-Amino-4-methylthiophene-3-carboxylic acid (CAS 14770-81-1)
- 4-Amino-2-methylthiophene-3-carboxylic acid (CAS 1555795-28-2)
Recommended Standards
- 5-Methylthiazole-2-carbohydrazide (CAS 858486-43-8)
- 6-Amino-5,6-dihydro-2H-thieno[3,2-c]pyrazol-3(3aH)-one (CAS 933701-60-1)
- 5-Isocyanato-6-methyl-2,3-dihydro-1,4-oxathiine (CAS 88258-66-6)
- 6-fluoro-2,3-dihydro-1H-isoindol-1-one (CAS 340702-10-5)
- ethyl 2-(7-hydroxy-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl)acetate (CAS 1206124-13-1)
- 5-bromo-4-sulfamoylthiophene-2-carboxylic acid (CAS 1099110-57-2)
- 2-Bromo-3-methoxy-4-methylpyridine (CAS 1227571-00-7)
- 2-((Cyanomethyl)thio)-N-phenylacetamide (CAS 773152-13-9)
- 4,4'-Bis (4-Aminophenoxy)biphenyl (CAS 13080-85-8)
- Benzyl 4-(aminomethyl)-4-fluoropiperidine-1-carboxylate (CAS 455267-64-8)
- 3-(Benzo[d][1,3]dioxol-5-yl)-2-(((tert-butoxycarbonyl)amino)methyl)propanoic acid (CAS 1260589-29-4)
- N-(2,4-Difluorophenyl)-2-(2-methyl-3,5-dioxothiomorpholino)acetamide (CAS 868215-98-9)
- 1-Benzyl-6-methylpiperidin-3-one (CAS 83413-42-7)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
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