Commodity200520072010
Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... $2,861 
Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ...  $7,802
Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ...$15,691$8,322 
Total$15,691$11,183$7,802