The chemical compound "O1,O2-isopropylidene-O5,O6-bis-(toluene-4-sulfonyl)-α-D-glucofuranose" is a complex carbohydrate derivative. It features a glucofuranose ring, which is a type of sugar molecule, with specific modifications: the isopropylidene group bridges the 1 and 2 hydroxyl groups, and the 5 and 6 hydroxyl groups are each substituted with a toluene-4-sulfonyl group. O1,O2-isopropylidene-O5,O6-bis-(toluene-4-sulfonyl)-α-D-glucofuranose is likely used in organic synthesis, particularly in the preparation of complex carbohydrates or as a protecting group in carbohydrate chemistry. The toluene-4-sulfonyl groups serve as protecting groups, preventing unwanted reactions at the 5 and 6 positions, while the isopropylidene group helps to rigidify the molecule and protect the 1 and 2 positions. O1,O2-isopropylidene-O5,O6-bis-(toluene-4-sulfonyl)-α-D-glucofuranose is an example of the精细化学 (fine chemistry) approach to modifying carbohydrates for specific applications in research or pharmaceuticals.
The CAS Registry Mumber 6935-51-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,3 and 5 respectively; the second part has 2 digits, 5 and 1 respectively. Calculate Digit Verification of CAS Registry Number 6935-51: (6*6)+(5*9)+(4*3)+(3*5)+(2*5)+(1*1)=119 119 % 10 = 9 So 6935-51-9 is a valid CAS Registry Number.