GRAS Reference 4991 info Quick Reference info FEMA Number 4991 CAS 1039550-44-1 Identity Description info Polyhydroxylated fatty alcohols (PFAs) typically measured as 60-80% avocadene and avocadyne; 10-30% Polyhydroxylated fatty alcohols - acetates (PFA acetates); 10-15% Citrates