TO PROVIDE AN AMINO PHOSPHATE DERIVATIVE HAVING AN EXCELLENT SPHINGOSINE-1-PHOSPHATE (S1P) RECEPTOR MODULATORY ACTION. AS A RESULT OF CONTINUED INTENSIVE RESEARCH TO CREATE A HIGHLY SAFE COMPOUND WHICH HAS AN S1P RECEPTOR MODULATORY ACTION, IS HAS BEEN DISCOVERED THAT AN AMINO PHOSPHATE DERIVATIVE REPRESENTED BY THE FOLLOWING GENERAL FORMULA (1), [CHEMICAL FORMULA 1] HAS A STRONG S1P RECEPTOR MODULATORY ACTION.