2'',3'',5'',6''-Tetrafluoro-2,5,2'''',5''''-tetramethyl-[1,4';1',1'';4'',1''';4''',1'''']quinquephenyl is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 57152-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,1,5 and 2 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 57152-81: (7*5)+(6*7)+(5*1)+(4*5)+(3*2)+(2*8)+(1*1)=125 125 % 10 = 5 So 57152-81-5 is a valid CAS Registry Number.