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4-hydroxy-5-methoxy-7a,9,10,10a-tetrahydro-2H-furo<3',2':4,5>furo<2,3-h>-1-benzopyran-2,9-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

87131-24-6

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87131-24-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87131-24-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,1,3 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 87131-24:
(7*8)+(6*7)+(5*1)+(4*3)+(3*1)+(2*2)+(1*4)=126
126 % 10 = 6
So 87131-24-6 is a valid CAS Registry Number.

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