(3R)-LS-isoleucine 1509-34-8 4-04-00-02777 (Beilstein Handbook Reference) Allo-L-isoleucine Alloisoleucine BRN 1721791 EINECS 216-142-3 Isoleucine, allo- Isoleucine, threo- L-Isoleucine, 3-methyl-, threo- L-Isoleucine, allo- L-Isoleucine, threo- L-Norvaline, 3-methyl-, threo- NSC 206282 Norvaline, 3-methyl-, threo- Pentanoic acid, 2-amino-3-methyl-, (S-(R*,S*))-