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(1R,2S,5E)-2α-Methyl-4α-[(R)-3-bromo-1,2-propadienyl]-7α-chloro-12α-bromo-3,13-dioxabicyclo[7.3.1]trideca-5,9-diene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81920-18-5

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81920-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81920-18-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,2 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81920-18:
(7*8)+(6*1)+(5*9)+(4*2)+(3*0)+(2*1)+(1*8)=125
125 % 10 = 5
So 81920-18-5 is a valid CAS Registry Number.

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