2-((6-Ethoxy-4-methylquinazolin-2-yl)amino)-5,6,7,8-tetrahydroquinazolin-4(3H)-one CAS 524055-98-9
| CAS No. | 524055-98-9 |
| Molecular Formula | C19H21N5O2 |
| Molecular Weight | 351.40 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.
2-((6-Ethoxy-4-methylquinazolin-2-yl)amino)-5,6,7,8-tetrahydroquinazolin-4(3H)-one (CAS 524055-98-9) is a high-purity analytical reference standard with the molecular formula C19H21N5O2 and a molecular weight of 351.40 g/mol.
Structurally, 2-((6-Ethoxy-4-methylquinazolin-2-yl)amino)-5,6,7,8-tetrahydroquinazolin-4(3H)-one (C19H21N5O2) contains a steroid core, an amide 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 351.40 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 2-((6-Ethoxy-4-methylquinazolin-2-yl)amino)-5,6,7,8-tetrahydroquinazolin-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 | C19H21N5O2 |
| Molecular Weight | 351.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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.) | 1984 |
| Nitrogen Atoms | 5 |
Related Ethoxy Standards
- 2-((8-Ethoxy-4-methylquinazolin-2-yl)amino)-5,6,7,8-tetrahydroquinazolin-4(3H)-one (CAS 524055-95-6)
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