(4-Bromo-phenyl)-[3,13-diamino-14-(4-bromo-benzoyl)-6,7,9,10,17,18,20,21-octahydro-5,8,11,16,19,22-hexaoxa-dibenzo[a,j]cyclooctadecen-2-yl]-methanone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 139979-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,7 and 9 respectively; the second part has 2 digits, 3 and 0 respectively. Calculate Digit Verification of CAS Registry Number 139979-30: (8*1)+(7*3)+(6*9)+(5*9)+(4*7)+(3*9)+(2*3)+(1*0)=189 189 % 10 = 9 So 139979-30-9 is a valid CAS Registry Number.
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