(6RS,8SR)-8-acetyl-5,6,8,10-tetrahydroxy-6,7,8,9-tetrahydroanthra<2,3-b>thiophene-4,11-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 76887-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,8,8 and 7 respectively; the second part has 2 digits, 8 and 9 respectively. Calculate Digit Verification of CAS Registry Number 76887-89: (7*7)+(6*6)+(5*8)+(4*8)+(3*7)+(2*8)+(1*9)=203 203 % 10 = 3 So 76887-89-3 is a valid CAS Registry Number.