1,2,3,5,7,11,13-Cyclotetradecaheptaen-9-yne,
1,4,8,11-tetrakis(4-methoxyphenyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 68996-53-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,9,9 and 6 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 68996-53: (7*6)+(6*8)+(5*9)+(4*9)+(3*6)+(2*5)+(1*3)=202 202 % 10 = 2 So 68996-53-2 is a valid CAS Registry Number.