Is it possible to purchase Disodium Ribonucleotides (E635) in consumer/small quantities? My research has indicated that it is only possible to order in bulk through contacting large suppliers. Has anyone had any luck purchasing E635 or disodium inosinate and guanylate separately?
Alibaba looks like the place to look for "inosinic acid" "food grade"
Amazon India has it, but it looks like no one has bought it yet, and you'd have to figure out their currency system. 

If you buy the free acid, you can just take the pH up with sodium hydroxide.