(r)-(-)-2-Methyl-2,4-pentanediol ,its CAS NO. is 99210-90-9,the synonyms is (r)-Hexylene glycol ; (r)-(-)-2-Methyl-2,4-pentanediol, 98+% ; Hexylene glycol pure ; (4r)-2-Methyl-2,4-pentanediol ; R-mpd .