Reference Standard
| CAS Number | 1185170-04-0 |
| Formula | C₂₁H₂₅N₃O₃S |
| Molecular Weight | ~399.51 g/mol |
| Purity | ≥95% |
| Storage | Refrigerated 2–8 °C |
S-oxide derivative of the 7-hydroxy quetiapine impurity; used as analytical reference.
Analytical impurity profiling, forced degradation studies.
Confirmed by HPLC, MS, and NMR with COA.
