3,7-bis-(4-nitro-phenyl)-2,6-dithioxo-2,3,6,7-tetrahydro-benzo[1,2-d;4,5-d']bisthiazole-4,8-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 72757-94-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,5 and 7 respectively; the second part has 2 digits, 9 and 4 respectively. Calculate Digit Verification of CAS Registry Number 72757-94: (7*7)+(6*2)+(5*7)+(4*5)+(3*7)+(2*9)+(1*4)=159 159 % 10 = 9 So 72757-94-9 is a valid CAS Registry Number.