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81309-33-3

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81309-33-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81309-33-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,0 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81309-33:
(7*8)+(6*1)+(5*3)+(4*0)+(3*9)+(2*3)+(1*3)=113
113 % 10 = 3
So 81309-33-3 is a valid CAS Registry Number.
InChI:InChI=1/C21H28O5/c1-20-8-7-16-14(15(20)4-5-17(20)18(24)11-22)3-2-12-10-13(23)6-9-21(12,16)19(25)26/h10,14-17,22H,2-9,11H2,1H3,(H,25,26)/t14-,15-,16-,17+,20-,21+/m0/s1

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