| CAS No. | 340817-44-9 |
| Molecular Formula | C19H19N3O2S |
| Molecular Weight | 353.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Structurally, (3-Amino-6-methyl-5,6,7,8-tetrahydrothieno[2,3-b][1,6]naphthyridin-2-yl)(4-methoxyphenyl)methanone (C19H19N3O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 353.44 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).
(3-Amino-6-methyl-5,6,7,8-tetrahydrothieno[2,3-b][1,6]naphthyridin-2-yl)(4-methoxyphenyl)methanone (CAS 340817-44-9) is a high-purity analytical reference standard with the molecular formula C19H19N3O2S and a molecular weight of 353.44 g/mol.
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), (3-Amino-6-methyl-5,6,7,8-tetrahydrothieno[2,3-b][1,6]naphthyridin-2-yl)(4-methoxyphenyl)methanone 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.
| Molecular Formula | C19H19N3O2S |
| Molecular Weight | 353.44 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |