5-Bromo-4-chloro-6-methyl-2-(methylthio)pyrimidine CAS 17119-74-3
| CAS No. | 17119-74-3 |
| Molecular Formula | C6H6BrClN2S |
| Molecular Weight | 253.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Bromo-4-chloro-6-methyl-2-(methylthio)pyrimidine (CAS 17119-74-3), molecular formula C6H6BrClN2S and molecular weight 253.55 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, chlorine/bromine substitution, an aromatic ring system, 5-Bromo-4-chloro-6-methyl-2-(methylthio)pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 253.55 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-Bromo-4-chloro-6-methyl-2-(methylthio)pyrimidine 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 | C6H6BrClN2S |
| Molecular Weight | 253.55 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-Butoxy-1,3,5-trichlorobenzene (CAS 155014-16-7)
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- 1,2,3-Trichloro-4-(2-methylpropoxy)benzene (CAS 1881290-34-1)
- 3-Nitro-4-(trifluoromethyl)benzoyl Chloride (CAS 1049103-00-5)
- (Chloro(4-phenoxyphenyl)methylene)dibenzene (CAS 34974-19-1)
- 7-Bromo-3-(trifluoromethyl)-1,2,3,4-tetrahydroisoquinoline (CAS 223916-04-9)
- N-(3-Cyanobenzylidene)-4-methylbenzenesulfonamide (CAS 496800-11-4)
- 4-Amino-5-cyclopropoxypyridine-2-sulfonamide (CAS 1243458-94-7)
- 2-((3S)-1-(tert-butoxycarbonyl)-3-fluoropiperidin-4-yl)acetic acid (CAS 2306259-26-5)
- 5-Nitro-2-oxo-3-pyridinecarboxylic Acid (CAS 6854-07-5)
- 2-(3-Hydroxypyridin-2-yl)quinazolin-4(3H)-one (CAS 114824-90-7)
- Bisindolylmaleimide II, 98% (CAS 137592-45-1)
- 2-(5-Ethylthien-2-yl)-8-methylquinoline-4-carboxylic acid (CAS 438229-38-0)
- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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