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rac-1,4,4a,8aα-tetrahydro-6,7-dimethoxy-4aα-methyl-1α,4α-methanonaphthalin-5,8-dion is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

97804-57-4

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97804-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97804-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,0 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 97804-57:
(7*9)+(6*7)+(5*8)+(4*0)+(3*4)+(2*5)+(1*7)=174
174 % 10 = 4
So 97804-57-4 is a valid CAS Registry Number.

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