4,5-Benzospiro(2,4)-heptane (and hepta-4,6-diene)-1-carboxylic a
4,5-Dichloro-3-organo-1,2-methylenedioxy-benzene arthropodicide
4-(2-Aminoethyl)-7-hydroxy-2-methyl-2,3-dihydrobenzofurans
4-(N-(3',4'-Methylenedioxybenzylidene)-aminomethyl)cyclohex ane-
4-Oxo-PGI.sub.2 compounds, their use in inhibition of thrombii a