8-acetoxy-19-hydroxy-(5α,7α,9α,11α,16α,18α,20α,22α)-5,7,9,11,16,18,20,22-octahydro-5,22:7,20:9,18:11,16-tetramethanononacene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 256433-43-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,4,3 and 3 respectively; the second part has 2 digits, 4 and 3 respectively. Calculate Digit Verification of CAS Registry Number 256433-43: (8*2)+(7*5)+(6*6)+(5*4)+(4*3)+(3*3)+(2*4)+(1*3)=139 139 % 10 = 9 So 256433-43-9 is a valid CAS Registry Number.
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