 Research into the natural product chemistry of Coprinellus micaceus has revealed the presence of several chemical compounds unique to the species . <unk> is a sterol with " modest " antibacterial activity against the pathogens Corynebacterium <unk> and Staphylococcus aureus . The compound ( Z , Z ) -4 @-@ oxo @-@ 2 @,@ 5 @-@ <unk> acid has inhibitory activity against glutathione S @-@ transferase , an enzyme that has been implicated in the resistance of cancer cells against chemotherapeutic agents , especially alkylating drugs . A 2003 study did not find any antibacterial activity in this species . A 1962 publication reported the presence of the biologically active indole compound tryptamine in C. micaceus , although the concentration was not determined . The fruit bodies additionally produce a variety of pigment compounds known as melanins — complex chemical polymers that contribute to the formation of soil humus after the fruit bodies have disintegrated . C. micaceus has been found to be devoid of the toxin coprine , the Antabuse @-@ mimicking chemical found in Coprinopsis atramentaria that causes illness when consumed simultaneously with alcohol . 
