(11aS,11bR)-11a-Ethyl-11-oxo-2,3,4,5,10,11,11a,11b-octahydro-1H-3a,9b-diaza-benzo[cd]fluoranthene-10-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 74904-38-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,0 and 4 respectively; the second part has 2 digits, 3 and 8 respectively. Calculate Digit Verification of CAS Registry Number 74904-38: (7*7)+(6*4)+(5*9)+(4*0)+(3*4)+(2*3)+(1*8)=144 144 % 10 = 4 So 74904-38-4 is a valid CAS Registry Number.
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