Commodity2005200620072008200920102011
Phenazone (antipyrin) & its derivs.   $154  $207
Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ...$499$672  $850$179 
Hydantoin & its derivs.    $643  
Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... $461$122 $171$105$955
Pyridine & its salts$142  $381  $847
Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ...  $848$531$913$788$5,094
Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ...$12,269$2,966$1,260$427$388$249$406
Melamine$433      
Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ...$67,767$90,391$79,520$64,639$27,467$94,543$53,078
Lactams (excl. of 2933.71 & 2933.72)  $32  $134 
Total$81,110$94,490$81,782$66,132$30,432$95,998$60,587