D-ribulose 5-phosphate + formaldehyde <=> D-arabino-hex-3-ulose 6-phosphate
d-ribulose 5-phosphate + formaldehyde <=> d-arabino-hex-3-ulose 6-phosphate
D-ribulose 5-phosphate + formaldehyde <=> D-arabino-hex-3-ulose 6-phosphate
d-ribulose 5-phosphate + formaldehyde <=> d-arabino-hex-3-ulose 6-phosphate