9-phenyl-7,7a,10a,11-tetrahydro-7,11-episulfano-naphtho[1',8':4,5,6]cyclohepta[1,2-c]pyrrole-8,10-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 15931-08-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,9,3 and 1 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 15931-08: (7*1)+(6*5)+(5*9)+(4*3)+(3*1)+(2*0)+(1*8)=105 105 % 10 = 5 So 15931-08-5 is a valid CAS Registry Number.