I need 2 lit. Of denatured alcohol or methanol ( atleast 98% pure) for my trangia stove. Can anybody give me the contact details of seller in Delhi or Kolkata. I need specific contact details. Please help me   

Thank you.

go to any chemical shop(which supply lab reagents) in C.R.Avenue - you will get lab grade methanol
not cheap though.

You will get in the footpath stove repair shops who repair kerosine stoves in Kolkata.
Please ask your nearer hardware shop. He will give you that item easily and will be cheap to you.
You even ask your nearest caterer service who use spirit lamp in party.

Thanks man