5-Bromo-4,6-dimethylpyrimidin-2-ylthiourea CAS 1797363-25-7
| CAS No. | 1797363-25-7 |
| Molecular Formula | C7H9BrN4S |
| Molecular Weight | 261.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Bromo-4,6-dimethylpyrimidin-2-ylthiourea (CAS 1797363-25-7), molecular formula C7H9BrN4S and molecular weight 261.14 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, bromine substitution, an aromatic ring system, 5-Bromo-4,6-dimethylpyrimidin-2-ylthiourea is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 261.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 5-Bromo-4,6-dimethylpyrimidin-2-ylthiourea 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 | C7H9BrN4S |
| Molecular Weight | 261.14 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Bromo Standards
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Recommended Standards
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- 1-Ethyl-6-fluoro-2-methylquinolin-4(1H)-one (CAS 1209702-89-5)
- Methyl 8-Bromoquinazoline-4-acetate (CAS 2092774-14-4)
- 3-Fluoro-4-(trifluoromethoxy)benzaldehyde (CAS 473917-15-6)
- 5-methoxy-6-methylpyrazine-2-carboxylic acid (CAS 1506139-97-4)
- 5-Formyl-2-hydroxy-3-nitrobenzonitrile (CAS 1283118-53-5)
- 3-bromo-4-nitro-1,2-thiazole (CAS 1989672-78-7)
- 4-(4-Fluoro-benzenesulfinylmethyl)-piperidine-1-carboxylic acid tert-butyl ester (CAS 1353945-88-6)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
Why CATO?
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