5-Bromo-2,4-dichloro-6-methylthieno[2,3-d]pyrimidine CAS 814919-17-0
| CAS No. | 814919-17-0 |
| Molecular Formula | C7H3BrCl2N2S |
| Molecular Weight | 297.99 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 5-Bromo-2,4-dichloro-6-methylthieno[2,3-d]pyrimidine.
5-Bromo-2,4-dichloro-6-methylthieno[2,3-d]pyrimidine (CAS 814919-17-0) is a high-purity analytical reference standard with the molecular formula C7H3BrCl2N2S and a molecular weight of 297.99 g/mol.
The molecular framework of 5-Bromo-2,4-dichloro-6-methylthieno[2,3-d]pyrimidine (C7H3BrCl2N2S) is characterized by a nitrile group, sulfur-containing functionality, chlorine/bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H3BrCl2N2S |
| Molecular Weight | 297.99 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 7-Bromo-2,4-dichloro-6-methylthieno[3,2-d]pyrimidine (CAS 1469811-06-0)
- 1-Bromo-4-butoxy-3,5,-dichlorobenzene (CAS 1242070-95-6)
- 5-Bromo-2-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1256360-43-6)
- 2-Bromo-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1256360-64-1)
- 2-Bromo-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1309982-23-7)
- 2-Bromo-4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1310404-49-9)
- 2-Bromo-5-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1310404-50-2)
- 2-Bromo-6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1321518-06-2)
Recommended Standards
- 3,4-Dibromo-2,2,5,5-tetramethyl-1-(l1-oxidaneyl)-2,5-dihydro-1H-pyrrole (CAS 78033-68-8)
- 2-Cyano-3-iodo-5-(trifluoromethyl)pyridine (CAS 1207845-82-6)
- 1-(4,5-Dibromothiophen-2-yl)propan-1-one (CAS 89794-18-3)
- 1-(3,5-Dibromothiophen-2-yl)propan-1-one (CAS 2354138-97-7)
- Benzyl 3-(3-((tert-butoxycarbonyl)amino)azetidin-1-yl)piperidine-1-carboxylate (CAS 1131594-81-4)
- 3-[(4-chloro-3,5-dimethylphenoxy)methyl]-4-methoxybenzaldehyde (CAS 438532-81-1)
- (3R)-3-ethynylpiperidine;hydrochloride (CAS 2306254-94-2)
- 8-Azaxanthine, Monohydrate (CAS 1468-26-4)
- 7-Chloro-4-hydroxy-1-indanone (CAS 24425-39-6)
- Ethyl 2,2-diethoxypropanoate (CAS 7476-20-2)
- (S)-2-(4-Hydroxy-2-oxopyrrolidin-1-yl)aceticacid (CAS 99437-11-3)
- 4-(((4-Chlorophenyl)thio)methyl)-6-((3,4-dichlorobenzyl)oxy)-2-methylpyrimidine (CAS 338960-38-6)
- 3-Ethoxy-4-methylbenzenethiol (CAS 1378785-65-9)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
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