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343621-82-9

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343621-82-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 343621-82-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,3,6,2 and 1 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 343621-82:
(8*3)+(7*4)+(6*3)+(5*6)+(4*2)+(3*1)+(2*8)+(1*2)=129
129 % 10 = 9
So 343621-82-9 is a valid CAS Registry Number.

343621-82-9Downstream Products

343621-82-9Relevant articles and documents

Photochemical Addition of Tertiary Amines to Stilbene. Stereoelectronic Control of Tertiary Amine Oxidation.

Lewis, Frederick D.,Ho, Tong-Ing,Simpson, J. Thomas

, p. 1077 - 1082 (2007/10/02)

The photochemical addition reactions of seven nonsymmetrical tertiary amines with singlet trans-stilbene are described.Addition of methyldiisopropylamine or isopropyldimethylamine is highly selective for formation of the least substituted α-amino radical, whereas addition of several less highly branched amines is relatively nonselective.The product isotope effect for tert-butylmethyl(trideuteriomethyl)amine is 2.2+/-0.2.Product selectivity is determined by the orientation of the deprotonation of an aminium radical intermediate by the stilbene radical anion.Selectiveoxidation results from e stereoelectronic effect which is most evident w hen one more alkyl group is highly branched.

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