30402
Brevetoxin B ( BTX - B ) , produced by dinoflagellates of the species Karenia , is a highly reactive molecule , due in part to an alpha , beta - unsaturated aldehyde group at the terminal side chain , leading to the production of metabolites by reduction , oxidation , and conjugation .
 Brevetoxin B, BTX - B, alpha , beta - unsaturated aldehyde
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
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Answer:
 Brevetoxin B, BTX - B, alpha , beta - unsaturated aldehyde