Hi! to give you a better insight here is a little about the scope in both the fields

ORGANIC CHEMISTRY: You can apply for academic positions in universities, apply for a phd, work in the pharmaceutical industry, the oil and gas industry,and you can even hold some duties in government departments and laboratories.

PHARMACEUTICAL CHEMISTRY: You can work in fields related to formulation and development of drugs, drug and food pharmaceuticals, can also become a biologist, chemist, health and safety technician, laboratory technician etc