Photoresist Chemicals TIANFU-CHEM — 1,4,6-Tri-O-acetyl-2,3-O-isopropylidene-a-D-mannopyranose,cas:68791-17-3 Cas：68791-17-3 Molecular Formula：TIANFU-CHEM — 1,4,6-Tri-O-acetyl-2,3-O-isopropylidene-a-D-mannopyranose,cas:68791-17-3