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perfluoro(4-methyl-2-oxabicyclo<3.3.0>octane) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74403-40-0

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74403-40-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74403-40-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,4,0 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74403-40:
(7*7)+(6*4)+(5*4)+(4*0)+(3*3)+(2*4)+(1*0)=110
110 % 10 = 0
So 74403-40-0 is a valid CAS Registry Number.

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