"O-(α-D-galactopyranosyluronic acid)-(1->2)-L-rhamnose" is a complex carbohydrate, specifically a disaccharide, composed of two sugar units: α-D-galactopyranosyluronic acid and L-rhamnose. The α-D-galactopyranosyluronic acid is a derivative of galactose, where the hydroxyl group at position 4 is oxidized to a carboxyl group, making it an uronic acid. L-rhamnose is a six-carbon sugar, also known as 6-deoxy-L-mannose. The two sugars are linked together in a glycosidic bond, with the α-D-galactopyranosyluronic acid being attached to the second carbon of the L-rhamnose. This specific arrangement and linkage are crucial for the disaccharide's biological activity and recognition by enzymes or receptors in various biological processes. Such disaccharides are often found in the structure of polysaccharides and glycoconjugates, playing important roles in cell signaling, immune response, and structural integrity of organisms.
The CAS Registry Mumber 6118-79-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,1,1 and 8 respectively; the second part has 2 digits, 7 and 9 respectively. Calculate Digit Verification of CAS Registry Number 6118-79: (6*6)+(5*1)+(4*1)+(3*8)+(2*7)+(1*9)=92 92 % 10 = 2 So 6118-79-2 is a valid CAS Registry Number.