The chemical compound "O2,O3-Diacetyl-O4-(tetra-O-acetyl-β-D-galactopyranosyl)-1,6-anhydro-β-D-mannopyranose" is a complex carbohydrate derivative. It features a β-D-mannopyranose ring that has undergone a 1,6-anhydro reaction, which means the hydroxyl groups at the 1 and 6 positions have been removed, forming a double bond. This ring is further modified by the presence of an acetylated β-D-galactopyranosyl group at the 4 position, which is tetra-O-acetylated, indicating that four of its hydroxyl groups are acetylated. Additionally, the compound has two acetyl groups at the 2 and 3 positions of the mannopyranose ring. O2,O3-Diacetyl-O4-(tetra-O-acetyl-β-D-galactopyranosyl)-1,6-anhydro-β-D-mannopyranose is significant in the field of organic chemistry, particularly in the study of complex carbohydrates and their derivatives, which are important in various biological processes and have potential applications in pharmaceuticals and materials science.
The CAS Registry Mumber 2672-62-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,7 and 2 respectively; the second part has 2 digits, 6 and 2 respectively. Calculate Digit Verification of CAS Registry Number 2672-62: (6*2)+(5*6)+(4*7)+(3*2)+(2*6)+(1*2)=90 90 % 10 = 0 So 2672-62-0 is a valid CAS Registry Number.