5.4.99.30 5.5 6 formation of beta-L-arabinofuranose 703883 5.4.99.30 6 - - 729435 5.4.99.30 6 - pyranose forming activity 702770 5.4.99.30 6.5 - furanose-forming activity 702770 5.4.99.30 6.8 - - 747199 5.4.99.30 6.8 - assay at 730599, 747199 5.4.99.30 7 7.5 formation of beta-L-arabinopyranose 703883