3-Cyclopentyl-2-mercapto-5-phenylthieno[2,3-d]pyrimidin-4(3h)-one CAS 744241-97-2
| CAS No. | 744241-97-2 |
| Molecular Formula | C17H16N2OS2 |
| Molecular Weight | 328.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Cyclopentyl-2-mercapto-5-phenylthieno[2,3-d]pyrimidin-4(3h)-one (CAS 744241-97-2), molecular formula C17H16N2OS2 and molecular weight 328.45 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-Cyclopentyl-2-mercapto-5-phenylthieno[2,3-d]pyrimidin-4(3h)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 328.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C17H16N2OS2 |
| Molecular Weight | 328.45 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Cyclopentyl Standards
- Cyclopentyl 2-benzyl-4-cyclopropylpiperazine-1-carboxylate (CAS 1421462-10-3)
- N-Cyclopentyl-2-(4-oxopyrido[3',2':4,5]thieno[3,2-d]pyrimidin-3(4H)-yl)acetamide (CAS 1215395-42-8)
- N-(Cyclopentyl(morpholino)methylene)-7-fluoroquinoxalin-6-amine (CAS 920034-20-4)
- 1-Cyclopentyl-3-iodopyrazolo[3,4-d]pyrimidin-4-amine (CAS 330794-31-5)
- 2'-Cyclopentyl-1'-oxo-1',4'-dihydro-2'h-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxylic acid (CAS 1217512-27-0)
- N-Cyclopentyl-5-methyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide (CAS 1574567-50-2)
- 1-Cyclopentyl-3-methyl-6-(thiophen-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 937597-71-2)
- N-Cyclopentyl-2-{4,6-dioxo-8-oxa-3,5-diazatricyclo[7.4.0.0^{2,7}]trideca-1(9),2(7),10,12-tetraen-5-yl}acetamide (CAS 1351398-87-2)
Recommended Standards
- 3-Benzyl-2-mercapto-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3H)-one (CAS 59898-68-9)
- 3-O-Methyl Estrone 17-(Ethanediyl Ketal) (CAS 28336-29-0)
- 3-Allyl-5-(3,4-dimethylphenyl)-2-mercaptothieno[2,3-d]pyrimidin-4(3H)-one (CAS 307513-44-6)
- 4-(1,3-Dithiolan-2-yl)phenyl 3-phenylacrylate (CAS 331461-09-7)
- tert-Butyl (R)-(1-(5-bromopyridin-2-yl)-2-hydroxyethyl)carbamate (CAS 2126088-15-9)
- Methyl 7-hydroxy-2,3,4,5-tetrahydro-1H-benzo[e][1,4]diazepine-2-carboxylate (CAS 672310-21-3)
- (4S)-6,8-dimethyl-3,4-dihydro-2h-1-benzopyran-4-ol (CAS 1567986-85-9)
- (2R,3R,4S,5R)-2-(6-Hydroxy-2-(pyridin-3-yl)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 88868-68-2)
- N-(2-Aminophenyl)-4-((4-methoxy-1H-indazol-1-yl)methyl)benzamide (CAS 920315-46-4)
- 1-(3-Chlorophenyl)-2-(pyridin-4-yl)ethanone (CAS 125996-70-5)
- 5-Methyl-N-(2-morpholino-2-oxoethyl)thiophene-2-carboxamide (CAS 1060927-04-9)
- 3-(4-Bromophenyl)-1-(2,6-dimethylphenyl)propan-1-one (CAS 898761-52-9)
- (cis-4-(tert-Butyl)cyclohexyl)methanol (CAS 10601-39-5)
- Insulin Degludec Impurity 7 (CAS CATO-C4X-21577)
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