Novel quaternary compounds

Novel quaternary salts and method

Novel racemization process

Novel radioactive estradienes

Novel radioactive estradienes labelled with iodine

Novel radioactive steroids

Novel radioactive steroids

Novel resins

Novel retinoids

Novel rifamycin compounds of high antibiotic activity

Novel salts and method of preparation

Novel schiff bases

Novel sequestrant builders and method of making the same

Novel silyl ester azetidine-2-sulfenate intermediates and proces

Novel solid thermosetting resins and processes for preparing sam

Novel solvents for the catalytic process for making polyhydric a

Novel solvents for the catalytic process for producing polyhydri

Novel somatostatin analogue

Novel spiro-oxazolidindiones

Novel steroids