57 35 h 5 29 n 4 60 s 10 65 sh 100 the product is non crystalline and has no melting point but softens and starts to flow at 54 56 u00b0 it forms crystalline or semicrystalline solvates with acetic acid and ethyl acetate and chloroform they all melt in the 53 56 u00b0 range an aliquot of free acid in ether is treated with one equivalent of dicyclohexylamine in ether as above to yield the dicyclohexylamine salt m p 151 u00b0 153 u00b0 anal calc 39 d for c 26 h 38 n 2 o 4 s c 65 79 h 8 07 n 5 90 s 6 75 found c 65 57 h 8 12 n 5 72 s 6 51 by substituting the hydroxy acid shown in column i of table a set out below for dl indolelactic acid and substituting the thio acid shown in column ii for 3 acetylthio propanoic acid in the procedure of example 15 the final products shown in column iii are obtained table a__________________________________________________________________________column i column ii str14 str15 r sub 3 r sub 2 n r m r sub 1__________________________________________________________________________17 h h 3 ch sub 3 co 1 h18 5 cl h 1.