Synthetics
Ethyl 3-(2-furyl) propanoate has a sweet, rum-like aroma.
Mosciano, Gerard P&F 18, No. 6, 33, (1993): Sweet, fruity, pineapple, ripe, acrylate rumy note, horseradish and slightly cooked jammy nuance
Luebke, William tgsc, (1986): Sweet fruity pineapple balsam
Bedoukian Research: A fruity pineapple aroma
For use mostly in tropical fragrances.