Mrv1652306172021122D 5 4 0 0 0 0 999 V2000 9998.9586 9998.7723 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 9998.2439 9999.1844 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 9999.6740 9999.1844 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 9997.5292 9998.7723 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 10000.3874 9998.7723 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 0 0 0 0 1 3 1 0 0 0 0 2 4 1 0 0 0 0 3 5 2 0 0 0 0 M END > CHEM004178 > chemdb > C\C=C\C=O > InChI=1S/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+ > MLUCVPSAIODCQM-NSCUHMNNSA-N > C4H6O > 70.0898 > 70.041864814 > 1 > 11 > 7.6305531877965045 > 1 > 0 > 0 > 0 > (2E)-but-2-enal > 0.7609660349999998 > 0 > 0 > 0 > -4.090822229263441 > 17.07 > 22.0395 > 1 > 1 > crotonaldehyde > 1 > 2-Butenal, (e)- > 123-73-9 > (E)-2-Butenal; 2-Butenal; Crotonaldehyde; Crotonaldehyde, (E)-; trans-Crotonaldehyde $$$$