1,1':4',1'':4'',1''':4''',1'''':4'''',1'''''-Sexiphenyl, 2'',2''',5'',5'''-tetramethyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 66252-68-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,2,5 and 2 respectively; the second part has 2 digits, 6 and 8 respectively. Calculate Digit Verification of CAS Registry Number 66252-68: (7*6)+(6*6)+(5*2)+(4*5)+(3*2)+(2*6)+(1*8)=134 134 % 10 = 4 So 66252-68-4 is a valid CAS Registry Number.