rel-(1R,2R,3S,9S)-1,10,11,12-Tetraphenyl-4-oxapentacyclo<8.2.1.02,9.03,7.06,8>tridec-11-en-5,13-dion is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 81002-67-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,0 and 2 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 81002-67: (7*8)+(6*1)+(5*0)+(4*0)+(3*2)+(2*6)+(1*7)=87 87 % 10 = 7 So 81002-67-7 is a valid CAS Registry Number.