Protosappanin A

Formula : C15-H12-O5
CAS : 102036-28-2 

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Protostreptovaricin

Formula :
CAS : 78515-87-4 

Precursors of streptovaricins.

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Protosubtilin

Formula :
CAS : 97397-14-3 

Proteolytic complex from Bacillus subtilis.

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