3-(3,4-Dimethylphenyl)-5-ethyl-2-mercapto-6-methylthieno[2,3-d]pyrimidin-4(3h)-one CAS 743452-41-7
| CAS No. | 743452-41-7 |
| Molecular Formula | C17H18N2OS2 |
| Molecular Weight | 330.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(3,4-Dimethylphenyl)-5-ethyl-2-mercapto-6-methylthieno[2,3-d]pyrimidin-4(3h)-one (CAS 743452-41-7) is a high-purity analytical reference standard with the molecular formula C17H18N2OS2 and a molecular weight of 330.47 g/mol.
Owing to a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-(3,4-Dimethylphenyl)-5-ethyl-2-mercapto-6-methylthieno[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 330.47 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-(3,4-Dimethylphenyl)-5-ethyl-2-mercapto-6-methylthieno[2,3-d]pyrimidin-4(3h)-one 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 | C17H18N2OS2 |
| Molecular Weight | 330.47 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Dimethylphenyl Standards
- 3-(2,3-Dimethylphenyl)-5-ethyl-6-methyl-2-sulfanyl-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 743452-50-8)
- 3-(2,5-Dimethylphenyl)-5-ethyl-6-methyl-2-sulfanyl-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 743452-24-6)
- 2-(4-(3,4-Dimethylphenyl)-2-(piperidin-1-yl)thiazol-5-yl)acetic acid (CAS 1443290-40-1)
- 3-{[4-(2,5-Dimethylphenyl)piperazin-1-yl]-carbonyl}-2,2-dimethylcyclopropanecarboxylic acid (CAS 1142214-86-5)
- N-(3,5-Dimethylphenyl)-1,2,3,4-tetrahydroacridine-9-carboxamide (CAS 853317-85-8)
- 2-((2,4-Dimethylphenyl)amino)-2-oxoethyl 2-(methylthio)nicotinate (CAS 475055-67-5)
- 2-((2,5-Dimethylphenyl)amino)-2-oxoethyl 2-(methylthio)nicotinate (CAS 380436-67-9)
- 3-((3,4-Dimethylphenyl)sulfonyl)-7-hydroxy-2H-chromen-2-one (CAS 866013-26-5)
Recommended Standards
- 4-(Ethylsulfanyl)-11,13-dimethyl-N-(prop-2-en-1-yl)-8-thia-3,5,10-triazatricyclo[7.4.0.0^{2,7}]trideca-1(13),2(7),3,5,9,11-hexaen-6-amine (CAS 478065-73-5)
- 4,4-Benzylidenedi-2,5-xylidine (CAS 6370-33-8)
- 2-(Benzylthio)-3-ethyl-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 587011-26-5)
- 6-Ethyl-2-mercapto-5-methyl-3-(4-methyl-benzyl)-3H-thieno[2,3-d]pyrimidin-4-one (CAS 571159-02-9)
- b-D-Glucopyranoside,5-bromo-6-chloro-1H-indol-3-yl (CAS 93863-89-9)
- 6-methyl-N4-(4-methylphenyl)-N2-(phenylmethyl)-2,4-Pyrimidinediamine (CAS 352224-73-8)
- Ethyl 1-methyl-1H-indole-6-carboxylate (CAS 202745-74-2)
- Pyrimidine-2,4,5,6-tetraamine hydrochloride (CAS 65540-06-9)
- Z-Gly-Pro-OH (CAS 1160-54-9)
- 4-Amino-2-fluoro-N-isopropylbenzamide (CAS 934601-00-0)
- N-isobutyl-2-((1-phenyl-1H-benzo[d]imidazol-2-yl)thio)acetamide (CAS 5709-24-0)
- N<SUB>(im)</SUB>-trityl-<SC>L</SC>-histidine-propionamide (CAS 171176-63-9)
- 2-(Chloromethyl)-4-(difluoromethyl)-6-iodopyridine-3-carboxylic acid (CAS 1805610-76-7)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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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