Mrv1533004181501272D 5 4 0 0 0 0 999 V2000 1.2375 0.7145 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 0.8250 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 0.0000 0.0000 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 -0.4125 -0.7145 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 0.0000 -1.4289 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 4 0 0 0 2 3 2 0 0 0 0 3 4 1 0 0 0 0 4 5 2 0 0 0 0 M END > CHEM017022 > chemdb > CC=CC=O > InChI=1S/C4H6O/c1-2-3-4-5/h2-4H,1H3 > MLUCVPSAIODCQM-UHFFFAOYSA-N > C4H6O > 70.091 > 70.041864813 > 1 > 11 > 7.6305531877965045 > 1 > 0 > 0 > 0 > but-2-enal > 0.88 > 0.7609660349999998 > -0.02 > 0 > 0 > 0 > -4.090822229263441 > 17.07 > 22.0395 > 1 > 1 > 6.65e+01 g/l > methacrolein > 1 > Crotonaldehyde > 4170-30-3 $$$$