4,6-Diimino-5-methyltetrahydropyrimidine-2(1H)-thione CAS 857412-53-4
| CAS No. | 857412-53-4 |
| Molecular Formula | C5H8N4S |
| Molecular Weight | 156.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,6-Diimino-5-methyltetrahydropyrimidine-2(1H)-thione.
4,6-Diimino-5-methyltetrahydropyrimidine-2(1H)-thione (CAS 857412-53-4) is a high-purity analytical reference standard with the molecular formula C5H8N4S and a molecular weight of 156.21 g/mol.
Owing to a nitrile group, sulfur-containing functionality, 4,6-Diimino-5-methyltetrahydropyrimidine-2(1H)-thione is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 156.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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-Diimino-5-methyltetrahydropyrimidine-2(1H)-thione 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 | C5H8N4S |
| Molecular Weight | 156.21 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Diimino Standards
Recommended Standards
- 4,6-Diamino-2-methylpyrimidine-5-thiol (CAS 52514-03-1)
- 4-Acetyl-2-amino-5-methylthiazole (CAS 40353-62-6)
- 3-Thioxohexahydro-1H-pyrrolo[1,2-c]imidazol-1-one (CAS 32085-78-2)
- 4-allyl-5-amino-4H-1,2,4-triazole-3-thiol (CAS 76267-74-8)
- N-(4-chlorophenyl)-5,7-bis(trifluoromethyl)-1,8-naphthyridin-2-amine (CAS 241488-35-7)
- (1S,6R)-8-methyl-3,8-diazabicyclo[4.2.0]octane;dihydrochloride (CAS 2221988-52-7)
- (6-(Azepan-1-yl)pyridin-3-yl)(phenyl)methanone (CAS 1355223-67-4)
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