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900503-39-1

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900503-39-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 900503-39-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,0,5,0 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 900503-39:
(8*9)+(7*0)+(6*0)+(5*5)+(4*0)+(3*3)+(2*3)+(1*9)=121
121 % 10 = 1
So 900503-39-1 is a valid CAS Registry Number.
InChI:InChI=1/C20H25NO4/c1-20(2,3)25-19(23)21-14-9-10-15(21)12-13(11-14)16-7-5-6-8-17(16)18(22)24-4/h5-8,11,14-15H,9-10,12H2,1-4H3

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