Structure #1 Mrv0541 02241207032D 7 7 0 0 0 0 999 V2000 0.5678 1.9393 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 1.2352 0.6294 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 0.9803 -0.1553 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 0.5678 1.1143 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 0.1553 -0.1553 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 -0.3297 -0.8227 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 -0.0997 0.6294 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 1 4 2 0 0 0 0 2 3 2 0 0 0 0 2 4 1 0 0 0 0 3 5 1 0 0 0 0 4 7 1 0 0 0 0 5 6 2 0 0 0 0 5 7 1 0 0 0 0 M END > CHEM003014 > chemdb > C=C1OC(=O)C=C1 > InChI=1S/C5H4O2/c1-4-2-3-5(6)7-4/h2-3H,1H2 > RNYZJZKPGHQTJR-UHFFFAOYSA-N > C5H4O2 > 96.0841 > 96.021129372 > 1 > 8.820827817371844 > 1 > 0 > 0 > 0 > 5-methylidene-2,5-dihydrofuran-2-one > 0.70 > 0.7568214106666666 > -0.19 > 0 > 1 > 0 > -6.944433090374474 > 26.3 > 26.0101 > 0 > 1 > 6.18e+01 g/l > protoanemonin > 1 > T3D4054 > Protoanemonin > 108-28-1 > 4-Methylenebut-2-en-4-olide; 5-Methylene-2(5H)-furanone; cis-4-Methylenebut-2-en-4-olide > Organic Compound; Ester; Plant Toxin; Metabolite; Natural Compound; PFAS; Phytotoxin $$$$