September 7th
1828 Alexandre M. Butlerov, researcher on the structural theory of organic chemistry; first used term chemical structure; synthesized polymer of formaldehyde, was born.
1829 F. August Kekulé conceived the ring structure of benzene, 1865; described the quadrivalence of carbon and structural theory of organic chemistry, in 1858 and synthesized acetylene in 1864, was born.
1854 Paul Vielle, invented smokeless powder, Poudre B, from gelatinized nitrocellulose mixed with alcohol and ether, was born.