5-(4-Chlorophenyl)-7-methyl-3-oxo-N-phenyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide CAS 182171-02-4
| CAS No. | 182171-02-4 |
| Molecular Formula | C20H16ClN3O2S |
| Molecular Weight | 397.88 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-(4-Chlorophenyl)-7-methyl-3-oxo-N-phenyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide (CAS 182171-02-4), molecular formula C20H16ClN3O2S and molecular weight 397.88 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(4-Chlorophenyl)-7-methyl-3-oxo-N-phenyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide (C20H16ClN3O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 397.88 g/mol, it falls into the moderately-high-molecular-weight range. 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).
As a certified reference material (CRM), 5-(4-Chlorophenyl)-7-methyl-3-oxo-N-phenyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidine-6-carboxamide 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 | C20H16ClN3O2S |
| Molecular Weight | 397.88 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2009 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- 2-((5-(2-Chlorophenyl)-4-methyl-4H-1,2,4-triazol-3-yl)thio)-N-(cyanomethyl)-N-phenylacetamide (CAS 852687-59-3)
- 2-(2-Chlorophenyl)-5-(2-propoxybenzylidene)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 609794-89-0)
- 2-(4-Chlorophenyl)-5-(2-propoxybenzylidene)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 609794-88-9)
- 4-[3-(2-Chlorophenyl)-1,5-dihydro-5-thioxo-4H-1,2,4-triazol-4-yl]-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one (CAS 722464-23-5)
- 4-{2-[(4-chlorophenyl)methanesulfonyl]-6-(methoxymethyl)pyrimidin-4-yl}morpholine (CAS 478041-44-0)
- N-(4-chlorophenyl)-2-(2-tosylacetyl)hydrazine-1-carbothioamide (CAS 1024436-85-8)
- 1-(3-Chlorophenyl)-3-(1-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)cyclohexyl)urea (CAS 1396856-26-0)
- 2-(2-Chlorophenyl)-N-{1-[3-(pyrazin-2-yl)-1,2,4-oxadiazol-5-yl]cyclohexyl}acetamide (CAS 1396860-62-0)
Recommended Standards
- Ethyl 2-(3-(3-(chloromethyl)-1,2,4-oxadiazol-5-yl)propanamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 1192804-47-9)
- N-[3-(Benzyloxy)-2-pyridinyl]-N-(4-chlorobenzoyl)thiourea (CAS 1024338-96-2)
- N-(3-Chloro-4-Fluorophenyl)-2-[(1,4-Dihydro-5,6-Dimethyl-4-Oxothieno[2,3-d]Pyrimidin-2-ylThio]-Acetamide (CAS 606108-58-1)
- ((4-(2-Chlorophenoxy)phenyl)sulfonyl)leucine (CAS 875901-35-2)
- 3-Methyl-5-(p-tolyl)isoxazole-4-carboxylic acid (CAS 91569-57-2)
- 2-(Furan-3-yl)cyclopentan-1-ol (CAS 115754-86-4)
- 1-(Oxolane-2-carbonyl)-1,4-diazepane (CAS 63035-27-8)
- 2,2-Dimethyl-2,3-dihydrobenzo[d]thiazole (CAS 25111-89-1)
- 4-Amino-5-fluoro-1H-pyrrolo[2,3-b]pyridin-2(3H)-one (CAS 1190310-39-4)
- tert-Butyl 3,3-difluoro-4-(2,2,2-trifluoroacetamido)piperidine-1-carboxylate (CAS 1823836-00-5)
- 5-Cyclohexyl-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 1784575-76-3)
- Ac-Asp-Arg-Leu-Asp-Ser-OH (CAS 153959-57-0)
- 1H-Pyrrolo[3,2-c]pyridin-4(3aH)-one (CAS 142078-42-0)
- Semaglutide impurity 30 (CAS CATO-C4X-222630)
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