6826
A UPLC - MS / MS method was developed for the analysis of TTX and validated following the guidelines contained in the Commission Decision 2002 / 657 / EC for chemical contaminant analysis .
 Chemical: TTX
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: TTX 
Answer:
 Chemical: TTX