As chlorine is very electrophilic the profile of electrostatic charge through the entire molecule will be altered, forever or negative. Sterically it will even alter binding, but once more substitutions in the para posture happen to be effectively tolerated in other cathinones for example four MMC. Empirechemstore chemical compounds https://devinkievj.blogoxo.com/30640850/buy-4-cl-pvp-crystal-online-things-to-know-before-you-buy