Commodity200520072008200920102011
Tetrahydrofuran$140     
Heterocyclic comps. cont. an unfused furan ring (whether or not hydrogenate ... $164,000  $20,000$2,292
Lactones (excl. coumarin, methylcoumarins & ethylcoumarins)  $1,500$15,070  
Total$140$164,000$1,500$15,070$20,000$2,292