5-(tert-Butyl)-2,4-dichlorothieno[2,3-d]pyrimidine CAS 1226071-11-9
| CAS No. | 1226071-11-9 |
| Molecular Formula | C10H10Cl2N2S |
| Molecular Weight | 261.17 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-(tert-Butyl)-2,4-dichlorothieno[2,3-d]pyrimidine (CAS 1226071-11-9), molecular formula C10H10Cl2N2S and molecular weight 261.17 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(tert-Butyl)-2,4-dichlorothieno[2,3-d]pyrimidine (C10H10Cl2N2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 261.17 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 5-(tert-Butyl)-2,4-dichlorothieno[2,3-d]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H10Cl2N2S |
| Molecular Weight | 261.17 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- Bis(4-chlorophenyl-2,3,5,6-d4)methyl Alcohol (CAS 1219805-85-2)
- N-(3,4-Dichlorophenyl)-5,6-dihydro-4h-1,3-thiazin-2-amine (CAS 125022-67-5)
- N-(2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)ethanamine (CAS 1218791-16-2)
- N-Isopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (CAS 1256360-63-0)
- 3-(1,1-Dioxidotetrahydrothiophen-3-yl)propanoic acid (CAS 1018611-82-9)
- 2-(3,4-Dimethoxyphenyl)-4-oxo-1,4-dihydroquinoline-8-carboxylic acid (CAS 90034-82-5)
- 1-(4-Chloro-3-fluorophenyl)propan-1-amine (CAS 1270338-89-0)
- (5-Methyl-isothiazol-3-yl)-methanol (CAS 1803598-19-7)
- 5-(4-Chlorophenyl)-1-[2-(propan-2-yl)phenyl]-1h-imidazole-2-thiol (CAS 793678-95-2)
- 5-(4-Methoxyphenyl)-2-methylfuran-3-carboxylic acid (CAS 111787-87-2)
- Ethyl 1-benzyl-5-(phenylamino)-1,2,3,6-tetrahydropyridine-4-carboxylate (CAS 214551-56-1)
- (2-Ethoxy-5-methoxy-phenyl)-methanol (CAS 1094849-00-9)
- 2-(5-(tert-Butyl)-2-methyl-1H-indol-3-yl)acetic acid (CAS 383131-81-5)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com