bro, it is better you check your school catalog. generally you need 32-40 hours in chemistry including general chemistry(freshman year), organic (sophomore year), physical chemical(junior) and advanced cources like advanced orgo, advanced orgo etc for senior year. if you are interested in biochem you might take some biochem courses and biology till cell bio. maths till differential equations, mechanics, elec & mag for physics and one computer science is generally required for acs approved programs.