UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-hex-4-ulose = UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-hex-4-ulose
udp-2-acetamido-2,6-dideoxy-alpha-d-xylo-hex-4-ulose = udp-2-acetamido-2,6-dideoxy-beta-l-arabino-hex-4-ulose
UDP-2-acetamido-2,6-dideoxy-alpha-D-xylo-hex-4-ulose = UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-hex-4-ulose
udp-2-acetamido-2,6-dideoxy-alpha-d-xylo-hex-4-ulose = udp-2-acetamido-2,6-dideoxy-beta-l-arabino-hex-4-ulose