(1) amino compounds(2) They are composed of fatty acids bonded to the amino alcohol sphingosine.(3) There have been numerous reports of abnormal accumulations of amino compounds and amines in tissues of nutrient-deficient plants.(4) From this ensemble, the mean position of the side-chain amino group or the two carboxyl oxygens were determined.(5) isocyanic acid reacts with amino groups(6) Natural proteins are made up of alpha-amino acids, which have a carboxyl group and an amino group separated by one carbon atom.(7) In general, allergic reactions to amino esters are much more common than amino amides