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9-methoxy-7-(2-methoxy-phenyl)-6,7-dihydro-[1,3]dioxolo[4,5-g]chromen-8-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

109940-34-3

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109940-34-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109940-34-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,4 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 109940-34:
(8*1)+(7*0)+(6*9)+(5*9)+(4*4)+(3*0)+(2*3)+(1*4)=133
133 % 10 = 3
So 109940-34-3 is a valid CAS Registry Number.

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