Commodity2005200620072008
Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ...$22 $83 
Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ...   $109
Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... $933  
Total$22$933$83$109