[aS,(+)]-2,3-Dihydro-5,5',6,6',8,8'-hexahydroxy-2,2'-dimethyl[9,9'-bi[4H-naphtho[2,3-b]pyran]]-4,4'-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 56932-57-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,9,3 and 2 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 56932-57: (7*5)+(6*6)+(5*9)+(4*3)+(3*2)+(2*5)+(1*7)=151 151 % 10 = 1 So 56932-57-1 is a valid CAS Registry Number.