Synonyms: Guanosine 5'-(trihydrogenpyrophosphate), mono-b-L-galactopyranosyl ester(8CI); Guanosine 5'-pyrophosphate, b-L-galactopyranosyl ester (6CI); GDP-Gal; GDP-L-galactose; GDP-galactose; GDP-b-L-galactose; Guanosine 5'-(trihydrogen diphosphate), P'-L-galactopyranosyl ester; Guanosine5'-(trihydrogen diphosphate),P'-L-galactosyl ester; Guanosine5'-diphosphate-L-galactose; Guanosine5'-pyrophosphate, L-galactosyl ester; Guanosine 5'-pyrophosphate, galactosylester; Guanosine 5'-pyrophosphate, b-L-galactosyl ester; Guanosine diphosphate galactose; Guanosine diphosphogalactose