3-(3,5-Dimethylphenyl)-2-(ethylthio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one CAS 877653-20-8
| CAS No. | 877653-20-8 |
| Molecular Formula | C16H18N2OS2 |
| Molecular Weight | 318.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 318.46 g/mol gives 3-(3,5-Dimethylphenyl)-2-(ethylthio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-(3,5-Dimethylphenyl)-2-(ethylthio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one (CAS 877653-20-8) is a high-purity analytical reference standard with the molecular formula C16H18N2OS2 and a molecular weight of 318.46 g/mol.
Based on its molecular formula C16H18N2OS2, 3-(3,5-Dimethylphenyl)-2-(ethylthio)-6,7-dihydrothieno[3,2-d]pyrimidin-4(3H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 318.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
CATO manufactures 3-(3,5-Dimethylphenyl)-2-(ethylthio)-6,7-dihydrothieno[3,2-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 | C16H18N2OS2 |
| Molecular Weight | 318.46 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Dimethylphenyl Standards
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Recommended Standards
- 2-(4-Ethylphenyl)-N-(pentan-3-yl)quinolin-4-amine (CAS 853330-87-7)
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- 4-imino-2-mercapto-5-(4-methyl-1,3-thiazol-2-yl)-3-azaspiro[5.5]undec-1-ene-1-carbonitrile (CAS 851207-99-3)
- 3-Ethoxybenzene-1-sulfonyl chloride (CAS 69129-60-8)
- 7-ethyl-[1,2,4]triazolo[4,3-c]pyrimidine-5-thiol (CAS 1795069-05-4)
- 5-(4-Chlorophenyl)-4-(2-methylhexyl)-4h-1,2,4-triazole-3-thiol (CAS 749219-33-8)
- Ethyl 3-(2-bromophenyl)acrylate (CAS 99134-25-5)
- Chlorthalidone RC 3 (CAS 61959-32-8)
- [3-(2-methoxyphenyl)-1,2-oxazol-5-yl]methanamine hydrochloride (CAS 1431962-29-6)
- Tulobuterol Impurity N7 (CAS 179749-59-8)
- 5,5,6,6,7,7,7-Heptafluoroheptane-2,4-dione (CAS 356-30-9)
- 4-{[(3-Dimethylamino-propyl)-methyl-amino]-methyl}-benzoic acid dihydrochloride (CAS 1187931-64-1)
- Peptide 432 (CAS CATO-CPTD788432)
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