4-Isopropoxy-2-(piperazin-1-yl)-5,6,7,8-tetrahydroquinazoline oxalate CAS 81532-71-0
| CAS No. | 81532-71-0 |
| Molecular Formula | C15H24N4O |
| Molecular Weight | 276.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Isopropoxy-2-(piperazin-1-yl)-5,6,7,8-tetrahydroquinazoline oxalate (CAS 81532-71-0), molecular formula C15H24N4O and molecular weight 276.38 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Isopropoxy-2-(piperazin-1-yl)-5,6,7,8-tetrahydroquinazoline oxalate (C15H24N4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 276.38 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C15H24N4O |
| Molecular Weight | 276.38 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 4 |
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