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20835-21-6

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20835-21-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20835-21-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,3 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20835-21:
(7*2)+(6*0)+(5*8)+(4*3)+(3*5)+(2*2)+(1*1)=86
86 % 10 = 6
So 20835-21-6 is a valid CAS Registry Number.

20835-21-6Relevant articles and documents

Stereochemical Studies. VI. Stereoselective Synthesis of trans-Fused Octahydroindene-1-carboxylic Acids

Galteri, Mario,Lewis, Peter H.,Middleton, Sydney,Stock, Lionel E.

, p. 101 - 111 (2007/10/02)

The trans-fused octahydroindene-1-carboxylic acid (9) having a pseudo-axial carboxyl group is formed in good yield on oxidation of 2-acyl derivatives of trans-fused octahydronaphthalen-1(2H)-one.On epimerization it yields the pseudo-equatorial isomer (3)

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