Custom Synthesis
| CAS Number | Not assigned |
| Formula | C₂₃H₂₀D₈N₅O₅ |
| Molecular Weight | ~454–462 g/mol |
| Purity | ≥98% |
| Storage | Cool dry conditions |
Deuterium-labeled R-enantiomer of doxazosin used as an internal standard for LC-MS quantitation of doxazosin in biological matrices.
Bioanalytical LC-MS/MS assays, pharmacokinetic studies.
Verified by MS/NMR labeling distribution and chromatographic purity.