53725-47-6 BRN 1649354 Pyridine, 1,2,3,6-tetrahydro-4-butyl-1-((1-pyrrolidinyl)acetyl)-2,2,6,6-tetramethyl- Pyridine, 4-butyl-1-((1-pyrrolidinyl)acetyl)-1,2,3,6-tetrahydro-2,2,6,6-tetramethyl-