Official course description: 343 Introductory Organic Chemistry. I, II, SS; 3 cr (P-I). Chemistry 343 covers fundamental aspects of organic molecular structure, including stereochemistry, and introduces basic themes in organic reactivity. It is the first semester of a two-semester organic chemistry sequence. Chemistry 345 is the second course in the sequence. Pre-Reqs: Chem 104, 109 or 116. For students expecting to take two semesters of organic chemistry. - See more at: