1-Oxa-4-aza-2,6-disilacyclohexane, 4-((3-methoxyphenyl)methyl)-2,2,6,6-tetramethyl- 4-((3-Methoxyphenyl)methyl)-2,2,6,6-tetramethyl-1-oxa-4-aza-2,6-disilacyclohexane 72821-05-7 MPSC hydrochloride San 58112 San-58112 Sandoz 58112 Sandoz compound 58-112