(5aSR,6aRS,7SR,10aRS,11aRS)-5a,11a-epoxy-5a,6a,7,10,10a,11a-hexahydro-7-methoxy-9-trimethylsilyloxynaphtacene-5,6,11,12,-tetraone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 78946-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,9,4 and 6 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 78946-81: (7*7)+(6*8)+(5*9)+(4*4)+(3*6)+(2*8)+(1*1)=193 193 % 10 = 3 So 78946-81-3 is a valid CAS Registry Number.
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