There are millions of carbon compounds present in nature. In order to clearly identify them, a systematic method of naming has been developed and is known as the IUPAC (International Union of Pure and Applied Chemistry) system of nomenclature. This course module discusses the rules for IUPAC nomenclature for various compound families and compounds with different functional groups. This topic is introduced at school level for simple mono-substituted hydrocarbon for example alkanes, alkenes and alkynes. Students are introduced to only few functional groups like carboxylic acid, alcohol, halogen etc. Students are not aware about priorities allotted for various functional groups in poly- substituted organic compounds. Organic compounds with more than two functional groups is called multi-substituted compound. IUPAC has given priorities for various functional groups. They face difficulty in naming complex molecules or drawing the structure of a compound whose IUPAC name is given. The course aims to bridge this gap by making use of available OER, videos, web resources besides self -developed PPT and notes. Assessment includes both formative and summative assessments and we hope to achieve this by the quizzes/ MCQ’s and assignments which are part of the module. This would also encourage problem solving among the students.