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3-butyl-4-formylphthalide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

425642-83-7

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425642-83-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 425642-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,5,6,4 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 425642-83:
(8*4)+(7*2)+(6*5)+(5*6)+(4*4)+(3*2)+(2*8)+(1*3)=147
147 % 10 = 7
So 425642-83-7 is a valid CAS Registry Number.

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