Commodity200720102011
Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ...  $3,565
Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ...$120  
Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ... $6,385 
Total$120$6,385$3,565