11426
For methadone individual enantiomers and metabolism by CYP2B6 . 6 compared with CYP2B6 . 1 , Vmax was diminished , Ks was greater and the in vitro intrinsic clearance was diminished 5 - to 6 - fold .
 Chemical: methadone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: methadone