4-Chloro-5-(4-methoxyphenyl)thieno[2,3-d]pyrimidine CAS 312584-53-5
| CAS No. | 312584-53-5 |
| Molecular Formula | C13H9ClN2OS |
| Molecular Weight | 276.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Chloro-5-(4-methoxyphenyl)thieno[2,3-d]pyrimidine is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Chloro-5-(4-methoxyphenyl)thieno[2,3-d]pyrimidine (CAS 312584-53-5), a certified reference material (molecular formula C13H9ClN2OS, MW 276.74 g/mol) for analytical method development and quality control.
Structurally, 4-Chloro-5-(4-methoxyphenyl)thieno[2,3-d]pyrimidine (C13H9ClN2OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 276.74 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 4-Chloro-5-(4-methoxyphenyl)thieno[2,3-d]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 | C13H9ClN2OS |
| Molecular Weight | 276.74 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 7-Chloro-N-(o-tolyl)thiazolo[5,4-d]pyrimidin-2-amine (CAS 1000709-51-2)
- 1-Chloro-4-(4-fluorobenzyl)-5,6,7,8-tetrahydrophthalazine (CAS 1057682-44-6)
- 1-(5-Chloro-2-methylphenyl)-1H-pyrazolo[3,4-d]pyrimidine-4-thiol (CAS 1082367-17-6)
- 1-(3-Chloro-2-methylphenyl)-1H-pyrazolo[3,4-d]pyrimidine-4-thiol (CAS 1082437-03-3)
- 2-Chloro-3-(4-(methylsulfonyl)piperazin-1-yl)pyrazine (CAS 1281400-85-8)
- 5-Chloro-4-(piperidin-1-yl)pyridine-3-sulfonic acid (CAS 1352483-36-3)
- 3-Chloro-5-(piperidin-1-ylsulfonyl)pyridin-4(1H)-one (CAS 1352507-33-5)
- 3-Chloro-4-hydrazinyl-5-(pyrrolidin-1-ylsulfonyl)pyridine (CAS 1352525-98-4)
Recommended Standards
- 4-Chloro-3-oxo-2-(4-phenyl-1,3-thiazol-2-yl)butanenitrile (CAS 428512-62-3)
- 4-chloro-6-(4-methanesulfonylpiperazin-1-yl)pyrimidine (CAS 260441-56-3)
- 4-Chloro-3-(morpholine-4-sulfonyl)-phenylamine (CAS 325724-68-3)
- 4-Chloro-6-(4-methoxyphenyl)thieno[3,2-d]pyrimidine (CAS 869709-83-1)
- Lead(II) selenite (CAS 7488-51-9)
- (1R,3r)-3-(2-chloropyridin-4-yl)cyclobutan-1-amine (CAS 2360196-98-9)
- 2-(5-Bromo-3-nitropyridin-2-yl)acetonitrile (CAS 886372-80-1)
- 3-Bromo-2,6-dichloroquinoline (CAS 1366131-25-0)
- N-Isopropyl-1H-indazol-6-amine (CAS 1152873-01-2)
- 3-(tert-Butyl)pyrazole (CAS 15802-80-9)
- Potassium 2-(2-amino-5-chlorophenyl)-2-oxoacetate (CAS 120095-20-7)
- (Z)-3-(4-chlorophenyl)-2-(1-methyl-1H-pyrrol-2-yl)acrylonitrile (CAS 339009-43-7)
- 3,5-Dichloro-4-methylpyridine (CAS 100868-46-0)
- Des-Gly34-Tirzepatide (CAS CATO-CPTD788940)
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