2183-64-4 Cyclopyrazate ethobromide NSC9122 Pyrrolidinium, 1-[2-[(2-cyclopenten-1-ylphenylacetyl)oxy]ethyl]-1-ethyl-, bromide Pyrrolidinium, 1-ethyl-1-(2-hydroxyethyl)-, bromide, .alpha.-phenyl-2-cyclopentene-1-acetate