Cadox M-50a Red
Cadox M-50a Red, Methyl ethyl ketone peroxide, CAS 1338-23-4, Organic peroxide, Preferred fast acting red MEKP for curing promoted unsaturated polyester resins.
https://www.nouryon.com/product/cadox-m-50a-red-methyl-ethyl-ketone-peroxide-cas-1338-23-4/