Methyl 3,5-O-isopropylidene-2-O-mesyl-α-D-xylofuranoside is a complex organic compound with the molecular formula C12H20O7S. It is a derivative of α-D-xylofuranose, a monosaccharide sugar, where the hydroxyl groups at the 3rd and 5th carbons are protected by isopropylidene groups, and the hydroxyl group at the 2nd carbon is protected by a mesyl (methanesulfonyl) group. methyl 3,5-O-isopropylidene-2-O-mesyl-α-D-xylofuranoside is often used in organic synthesis, particularly in the preparation of complex carbohydrates and other biologically active molecules. The isopropylidene and mesyl protecting groups are crucial for preventing unwanted side reactions during synthesis, allowing for selective functionalization of the molecule.
The CAS Registry Mumber 7045-39-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,0,4 and 5 respectively; the second part has 2 digits, 3 and 9 respectively. Calculate Digit Verification of CAS Registry Number 7045-39: (6*7)+(5*0)+(4*4)+(3*5)+(2*3)+(1*9)=88 88 % 10 = 8 So 7045-39-8 is a valid CAS Registry Number.