homebrewing

Had some home brew Deca powder sitting around for a bit in an air tight container. Went to dig it out today and found that its turned a brownish color. Anyone know from experience if its safe to use? Thanks

sup fellows..decided to register on this forum cuz u guys are the bomb lol..anywayz theoretically, i have isotretinoin (accutane) and enough for six months..i heard it oxidizes very rapidly so i can;t just put it on my shelf..my questions are: 1) What can I do to prevent it from oxidizing over...