1918 CE REHBERG AND MARION B. DIXON ... Acknowledgments.-We are indebted to Miss Ruth Abbott for the ultraviolet absorption data, to Mr. 0. Sundberg and associates for the micro- analyses, and to Mr. Raul Maldonado for the chemical assays, Summary A series of 4-alkylaminopteroylglutamic acid derivatives has been synthesized, in which are in- cluded 4-dimethylaminopteroylglutamic acid and its 10-methyl-derivative, 4- (1 -piperidyl) ...
