5-Bromo-4,6-dichloro-2-(methylthio)pyrimidine CAS 98136-20-0
| CAS No. | 98136-20-0 |
| Molecular Formula | C5H3BrCl2N2S |
| Molecular Weight | 273.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Bromo-4,6-dichloro-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.
5-Bromo-4,6-dichloro-2-(methylthio)pyrimidine (CAS 98136-20-0) is a high-purity analytical reference standard with the molecular formula C5H3BrCl2N2S and a molecular weight of 273.97 g/mol.
Owing to a nitrile group, sulfur-containing functionality, chlorine/bromine substitution, 5-Bromo-4,6-dichloro-2-(methylthio)pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 273.97 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.
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.
Physical & Chemical Properties
| Molecular Formula | C5H3BrCl2N2S |
| Molecular Weight | 273.97 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 |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-Iodo-5-(trifluoromethyl)pyridazine (CAS 1049024-00-1)
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- 1,1,1,2,2-Pentafluoro-4-iodobutane (CAS 40723-80-6)
- 2-Iodo-5-(trifluoromethyl)pyrimidine (CAS 112930-95-7)
- 2-(Tert-butoxy)-3-chloroaniline (CAS 1039941-34-8)
- Ethyl 6-chloro-4-(difluoromethyl)picolinate (CAS 1805196-51-3)
- Ethyl (6-bromothiazolo[4,5-b]pyrazin-2-yl)carbamate (CAS 112342-70-8)
- (S)-Tetrahydrofuran-3-yl carbonochloridate (CAS 178153-11-2)
- (8-Isopropyl-8-azabicyclo[3.2.1]octan-3-yl)methanol (CAS 1210462-18-2)
- 7-Bromo-3,3-dimethyl-2,3-dihydropyrazolo[5,1-b]oxazole (CAS 2676863-02-6)
- 5-Methyl-4-phenyl-2-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1H-pyrazol-3-one (CAS 400075-07-2)
- 1-Butyl-1H-indole-3-carbaldehyde (CAS 119491-09-7)
- 1-(4-Hydroxybenzofuran-2-yl)ethanone (CAS 23295-57-0)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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