Ribulose-1,5-bisphosphate (RuBP) is an organic substance that is involved in photosynthesis. It is a colourless anion. a double phosphate ester of the ketose (ketone-containing sugar) called ribulose. Salts of RuBP can be isolated, but its crucial biological function happens in solution. To simplify the presentation, the image in the above table depicts the acid form of this anion.

Ribulose-1,5-bisphosphate (RuBP) is an organic substance that is involved in photosynthesis. It is a colourless anion. a double phosphate ester of the ketose (ketone-containing sugar) called ribulose. Salts of RuBP can be isolated, but its crucial biological function happens in solution. To simplify the presentation, the image in the above table depicts the acid form of this anion.