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Phosphonic acid, (2-methyl-3-phenyloxiranyl)-, diethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21966-65-4

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21966-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21966-65-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,6 and 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21966-65:
(7*2)+(6*1)+(5*9)+(4*6)+(3*6)+(2*6)+(1*5)=124
124 % 10 = 4
So 21966-65-4 is a valid CAS Registry Number.

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