Hii, 

These are the some of the best job opportunities for you after completing your MSc in organic chemistry are:

• Many PSUs like:ISRO, DRDO, Bhabha Atomic research Centre (BARC), Advanced Centre for Treatment, Research and Education in Cancer etc. take students from M.Sc. Chemistry via national level entrances. 
• You can also apply into the various departments of the government as Scientists like:UPSC,CSIR-UGC,SSC etc.
• You can also try for Civil Service exams and state PCS.
• You can also join petroleum companies such as the Bharat Petroleum, Indian Oil Corporation, ONGC, and NTPC etc. which regularly conduct recruitment exams for officers.
• You can go for teaching job in schools.
• You can also apply to private sectors like:Ranbaxy, Cipla, Glaxo etc. as quality controllers and other opportunities.
• You can also see career in food and packaging insdustry.
• If you wish for higher studies you are eigible for M.tech in IITs and other reputed institutes where you can apply with a valid and good GATE score.
• If you clear CSIR-UGC-JRF/ NET exam, you can do Ph.D. from any one of IITs, IISc., NCL, CDRI, TIFR or any other Indian University or you can Join CSIR or DST funded projects.

Hope this will help. 

Good luck!