7-(3-Chlorophenyl)-2-[4-(2-fluorophenyl)piperazin-1-yl]-3H,4H-thieno[3,2-d]pyrimidin-4-one CAS 1243089-53-3
| CAS No. | 1243089-53-3 |
| Molecular Formula | C22H18ClFN4OS |
| Molecular Weight | 440.92 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 7-(3-Chlorophenyl)-2-[4-(2-fluorophenyl)piperazin-1-yl]-3H,4H-thieno[3,2-d]pyrimidin-4-one.
7-(3-Chlorophenyl)-2-[4-(2-fluorophenyl)piperazin-1-yl]-3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 1243089-53-3), molecular formula C22H18ClFN4OS and molecular weight 440.92 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7-(3-Chlorophenyl)-2-[4-(2-fluorophenyl)piperazin-1-yl]-3H,4H-thieno[3,2-d]pyrimidin-4-one (C22H18ClFN4OS) is characterized by a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. 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. 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), 7-(3-Chlorophenyl)-2-[4-(2-fluorophenyl)piperazin-1-yl]-3H,4H-thieno[3,2-d]pyrimidin-4-one 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 | C22H18ClFN4OS |
| Molecular Weight | 440.92 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- 7-(4-Chlorophenyl)-2-(4-(2-fluorophenyl)piperazin-1-yl)thieno[3,2-d]pyrimidin-4(1H)-one (CAS 1226430-85-8)
- 2-(4-(3-Chlorophenyl)piperazin-1-yl)-7-(3-fluorophenyl)thieno[3,2-d]pyrimidin-4(1H)-one (CAS 1243004-67-2)
- 2-(4-(2-Chlorophenyl)piperazin-1-yl)-7-(3-fluorophenyl)thieno[3,2-d]pyrimidin-4(1H)-one (CAS 1243061-78-0)
- 7-(2-Chlorophenyl)-2-[4-(4-fluorophenyl)piperazin-1-yl]-3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 1243085-32-6)
- 7-(2-Chlorophenyl)-2-(4-(2-fluorophenyl)piperazin-1-yl)thieno[3,2-d]pyrimidin-4-ol (CAS 1243104-77-9)
- 3-{1-[2-(2-chlorophenyl)acetyl]piperidin-4-yl}-4-[(4-methoxyphenyl)methyl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775559-69-7)
- 3-(4-Chlorophenyl)-5-(4-phenylpiperazin-1-yl)-[1,2,4]triazolo[4,3-c]quinazoline (CAS 338793-00-3)
- 2-((2-(4-Chlorophenyl)-2-oxoethyl)thio)-4,6-diphenylnicotinonitrile (CAS 94360-91-5)
Recommended Standards
- 3-{1-[2-(3-chloro-4-methoxyphenyl)acetyl]piperidin-4-yl}-4-(4-methylphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775357-95-3)
- 3-{1-[2-(4-chloro-2-methylphenoxy)acetyl]piperidin-4-yl}-4-(4-methylphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775547-10-8)
- 4-(((6-Amino-3-(4-chlorophenyl)pyrido[2,3-b]pyrazin-8-yl)amino)methyl)benzenesulfonamide (CAS 28643-00-7)
- (1S,3S)-3-(8-chloro-1-(2-phenylquinolin-7-yl)imidazo[1,5-a]pyrazin-3-yl)-1-methylcyclobutanol (CAS 867163-02-8)
- SA 57 (CAS 1346169-63-8)
- 4-Chloro-6-methyl-2-phenylthieno[2,3-d]pyrimidine (CAS 1351385-18-6)
- 5-(2,4-Dichlorophenoxymethyl)furan-2-carbaldehyde (CAS 438221-90-0)
- N-Benzyl-2-fluoro-N-methylbenzamide (CAS 330469-18-6)
- 2-(4-Chlorophenyl)-3-(1H-1,2,4-triazol-1-yl)isoquinolin-1(2H)-one (CAS 113293-11-1)
- tert-Butyl ((1R,2R,4S)-rel-2-fluoro-4-hydroxycyclohexyl)carbamate (CAS 1268512-14-6)
- 2-Benzylcyclohexan-1-amine hydrochloride (CAS 854728-00-0)
- 2-((4-Ethyl-5-(pyridin-2-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-fluorophenyl)acetamide (CAS 578721-96-7)
- 2-Bromo-1-(6-methylthiazolo[3,2-b][1,2,4]triazol-5-yl)ethanone hydrobromide (CAS 187597-19-9)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
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