5-Bromo-6-mercaptopyrimidine-4(3H)-thione CAS 6303-49-7
| CAS No. | 6303-49-7 |
| Molecular Formula | C4H3BrN2S2 |
| Molecular Weight | 223.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Bromo-6-mercaptopyrimidine-4(3H)-thione is closely related to a nitrile group, sulfur-containing functionality, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Bromo-6-mercaptopyrimidine-4(3H)-thione (CAS 6303-49-7), molecular formula C4H3BrN2S2 and molecular weight 223.11 g/mol, is a CATO reference standard with documented purity and traceability.
5-Bromo-6-mercaptopyrimidine-4(3H)-thione (C4H3BrN2S2) contains a nitrile group, sulfur-containing functionality, bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 5-Bromo-6-mercaptopyrimidine-4(3H)-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 | C4H3BrN2S2 |
| Molecular Weight | 223.11 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.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Bromo Standards
- 1-(4-bromo-1H-pyrazol-1-yl)-2-methylpropan-2-ol (CAS 1008510-87-9)
- 1-Bromo-3-phenylbicyclo[1.1.1]Pentane (CAS 112043-92-2)
- 1-Bromo-2-(2-methoxyethoxy)cyclopentane (CAS 1249466-66-7)
- (2-bromo-3-methoxy-phenyl)hydrazine (CAS 1388065-78-8)
- 3-(3-Bromo-2-methylpropoxy)tetrahydrofuran (CAS 1494376-09-8)
- 6-Bromo-1,2,3,4-tetrahydro-1,4-methanonaphthalene (CAS 16499-72-2)
- 4-Bromo-2-methoxybenzyl alcohol (CAS 17102-63-5)
- 2-Bromo-1,1-dimethoxycyclohexane (CAS 1728-17-2)
Recommended Standards
- 5-Bromo-1,2,3,4-tetrahydro-1,4-methanonaphthalene (CAS 4228-42-6)
- 6-Bromo-1-methylene-1,2,3,4-tetrahydronaphthalene (CAS 740842-63-1)
- 5-(2-Bromoethyl)-2,2-dimethyl-1,3-dioxane (CAS 97845-58-4)
- 6-Bromo-4-methyl-1,2-dihydronaphthalene (CAS 35943-87-4)
- Di-μ-chlorobis[5-hydroxy-2-[1-(hydroxyimino-κN)ethyl]phenyl-κC]palladium(II) dimer (CAS 419581-64-9)
- N-Ethyl-2-phenoxyethanamine hydrochloride (CAS 100131-72-4)
- 3-Bromo-7-chloroimidazo[1,2-a]pyridine (CAS 342613-67-6)
- 2-Ethoxy-4-iodonicotinaldehyde (CAS 1706453-26-0)
- Methyl 3-oxo-3,5,7,8-tetrahydropyrido[4,3-c]pyridazine-6(2H)-carboxylate (CAS 39716-52-4)
- 1-(2-(4-Methoxyphenyl)-2-oxoethyl)pyridin-1-ium bromide (CAS 25407-31-2)
- N-(2,4-dichloro-5-(2-methoxyethoxy)phenyl)-2-((2-(methylamino)-2-oxoethyl)thio)acetamide (CAS 341964-80-5)
- 1-(3,4-Difluorophenyl)propan-1-one oxime (CAS 1217255-04-3)
- Methyl 3,5-difluoro-4-(1H-1,2,4-triazol-1-yl)benzoate (CAS 866009-52-1)
- Semaglutide impurity 331 (CAS CATO-C4X-2226231)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com