Commodity20052006
Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ...$360$40,000
Pyridine & its salts$247 
Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ... $574
Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ...$296$296
Total$903$40,870