4,6-Diaminopyrimidine-2(1H)-thione hydrate CAS 303136-89-2
| CAS No. | 303136-89-2 |
| Molecular Formula | C5H7N3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H7N3SH2O, 4,6-Diaminopyrimidine-2(1H)-thione hydrate 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 159.21 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.
4,6-Diaminopyrimidine-2(1H)-thione hydrate (CAS 303136-89-2), molecular formula C5H7N3SH2O and molecular weight 159.21 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.
As a certified reference material (CRM), 4,6-Diaminopyrimidine-2(1H)-thione hydrate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H7N3S H2O |
| Molecular Weight | 159.21 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Diaminopyrimidine Standards
- 4,6-Diaminopyrimidine-2(1H)-thione (CAS 1004-39-3)
- 2,6-Diaminopyrimidine-4-carbaldehyde (CAS 109138-03-6)
- 4,6-Diaminopyrimidine-5-carbonitrile (CAS 109831-70-1)
- 5,6-Diaminopyrimidine-4-carbonitrile (CAS 1208986-24-6)
- Methyl 2,4-diaminopyrimidine-5-carboxylate (CAS 1211472-42-2)
- 123501-43-9 4,6-DIAMINOPYRIMIDINE SULFATE DTXSID60482782 (CAS 123501-43-9)
- 2,5-Diaminopyrimidine-4-carboxylic acid (CAS 1260859-20-8)
- Methyl 2,5-diaminopyrimidine-4-carboxylate (CAS 1260883-37-1)
Recommended Standards
- 34945-15-8 5-(propylthio)-1H-1,2,4-triazole 5-propylsulfanyl-1H-1,2,4-triazole A822472 (CAS 34945-15-8)
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- Methyl 2-(4-Benzylpiperazino)-5-fluorobenzoate (CAS 1256633-30-3)
- Isoquinoline-3-sulfonyl chloride (CAS 1426231-94-8)
- (2-Bromo-4-nitrophenyl)(methyl)sulfane (CAS 20735-01-7)
- Dirhenium decacarbonyl (CAS 14285-68-8)
- 2-(4-Ethylphenoxy)-N-{[(4-nitrophenyl)carbamothioyl]amino}acetamide (CAS 891634-78-9)
- N-(5-methyl-1,3-thiazolidin-2-ylidene)pyridin-3-amine dihydrochloride (CAS 1252559-53-7)
- 6-Bromo-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione (CAS 1112208-70-4)
- C-Peptide（dog） (CAS 39016-05-2)
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