7,8,9,10-tetrachloro-1,1,4,4-tetraphenyl-benzo[b][1,2]diazeto[1,2-d][1,4,5]oxadiazepine-2,5-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 90116-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,1,1 and 6 respectively; the second part has 2 digits, 2 and 0 respectively. Calculate Digit Verification of CAS Registry Number 90116-20: (7*9)+(6*0)+(5*1)+(4*1)+(3*6)+(2*2)+(1*0)=94 94 % 10 = 4 So 90116-20-4 is a valid CAS Registry Number.