Organic Chemistry I (CHEM 231) complete notes LeonJe Organic Chemistry I lecture notes covering CHEM 231 from the Binghamton University. These 157 pages long notes helped me getting an A in exam. $12.00 – Add to Cart Checkout Added to cart Organic Chemistry I (CHEM 3511) lecture notes LeonJe Organic Chemistry I lecture notes covering CHEM 3511 from the Brooklyn College. These 157 pages long notes helped me getting an A in exam. $12.00 – Add to Cart Checkout Added to cart