A hydrocarbon compound with the chemical formula C2H2, often used in organic synthesis reactions.
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(2S,4R,6S,8R,9S)-4-<(tert-butyldiphenylsilyl)oxy>-8,9-dimethyl-2-ethenyl-1,7-dioxaspiro<5.5>undecane
2-(2,5-Dimethyl-phenyl)-3-methyl-1-vinyl-1H-pyrrole
2-(4-phenylthiophenyl)pyrrole
1-phenyl-2,4-nonadiyn-1-one
