1,2-O-isopropylidene-α-D-xylo-5-hexulofuranurono-6,3-lactone is a complex organic compound with the molecular formula C12H18O7. It is a derivative of a sugar molecule, specifically a furanose sugar, which is a type of carbohydrate. 1,2-O-isopropylidene-α-D-xylo-5-hexulofuranurono-6,3-lactone is characterized by the presence of a furan ring, which is a five-membered ring containing four carbon atoms and one oxygen atom. The "1,2-O-isopropylidene" part of the name indicates that the first and second hydroxyl groups (-OH) of the sugar molecule are protected by an isopropylidene group, which is a chemical modification that helps to stabilize the molecule and prevent unwanted reactions. The "α-D-xylo" part specifies the configuration of the sugar, indicating that it is in the alpha form and derived from D-xylose, a pentose sugar. The "5-hexulofuranurono-6,3-lactone" portion describes the presence of a lactone ring formed between the 6 and 3 positions of the sugar, which is a key feature of 1,2-O-isopropylidene-α-D-xylo-5-hexulofuranurono-6,3-lactone. This chemical is often used in the synthesis of other complex carbohydrates and as a building block in organic chemistry.
The CAS Registry Mumber 5040-08-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,0,4 and 0 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 5040-08: (6*5)+(5*0)+(4*4)+(3*0)+(2*0)+(1*8)=54 54 % 10 = 4 So 5040-08-4 is a valid CAS Registry Number.