all items  in current results   Refine your search within these categories: 01. Food Nutrient & Dietary Chemicals 02. Food Pesticide Chemicals with Regulated Residues on Food Commodities 03. Biological Effects of Specific Chemicals: all > molecular messenger [CHEBI:33280] > hormone [CHEBI:24621] > sex hormone [CHEBI:50112] > progestogen [CHEBI:50745] > progestin [CHEBI:59826] > levonorgestrel [CHEBI:6443] 04. Bioactive Capabilities of Specific Chemicals 05. Industrial Uses (group results) pharmaceutical [CHEBI:52217] (1) 06. Name of Biological Source of Chemical 07. Part of Biological Source of Chemical 08. Chemical Category (group results) main group molecular entity [CHEBI:33579] (1) polyatomic entity [CHEBI:36357] (1) 09. Chemical Capabilities Recently Viewed Items Go to Item History   [CHEBI:545687]   traumatic acid

These terms define your current search. Click the × to remove a term. 03. Biological Effects of Specific Chemicals: molecular messenger [CHEBI:33280] > hormone [CHEBI:24621] > sex hormone [CHEBI:50112] > progestogen [CHEBI:50745] > progestin [CHEBI:59826] > levonorgestrel [CHEBI:6443] × 1 result (ungrouped)   [CHEBI:6443]   levonorgestrel