3,3'5-Triiodo-L-thyronine 3,5,3'-L-Triiodo-L-thyronine 3,5,3'-triiodothyronine 4-(3-iodo-4-hydroxy-phenoxy)-3,5-diiodophenylalanine 6893-02-3 L-3,5,3'-Triiodothyronine L-triiodothyronine LIOTHYRONINE O-(4-hydroxy-3-iodo-phenyl)-3,5-diiodo-L-tyrosine triiodothyronine triothyrone