This page lists insulins with acetate buffers.
“Hypurin Bovine Lente is a beef-based Lente insulin made by CP Pharma. It is comparable to...Hypurin Bovine Lente
“Humulin L was a U100 r-DNA/GE/GM intermediate-acting, lente insulin. Novo Nordisk also made...Humulin L
“Humulin U is a long-acting, Ultralente insulin formerly produced by Eli Lilly, who stopped...Humulin U
“This was the Euro brand name Eli Lilly gave its U100, long-acting, Ultralente insulin; it was...Humulin Zn
“A 100% porcine U100 insulin formerly produced by Eli Lilly, discontinued in 2003 and comprised...Iletin II Lente