6-Benzyl-7,9-diphenyl-2-(toluene-4-sulfonyl)-2,3a,4,5,6,7-hexahydro-3H-1,2,6,7,9-pentaaza-benzo[e]azulene-8,10-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 109519-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,5,1 and 9 respectively; the second part has 2 digits, 8 and 9 respectively. Calculate Digit Verification of CAS Registry Number 109519-89: (8*1)+(7*0)+(6*9)+(5*5)+(4*1)+(3*9)+(2*8)+(1*9)=143 143 % 10 = 3 So 109519-89-3 is a valid CAS Registry Number.