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767321-63-1

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767321-63-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 767321-63-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,7,3,2 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 767321-63:
(8*7)+(7*6)+(6*7)+(5*3)+(4*2)+(3*1)+(2*6)+(1*3)=181
181 % 10 = 1
So 767321-63-1 is a valid CAS Registry Number.

767321-63-1Relevant articles and documents

Stereoselective synthesis of enantiomerically pure piperidine derivatives by N-galactosylation of pyridones

Klegraf, Ellen,Follmann, Markus,Schollmeyer, Dieter,Kunz, Horst

, p. 3346 - 3360 (2007/10/03)

Stereoselective desymmetrization of 4-pyridone has been achieved through selective N-galactosylation, activation of the N-(galactosyl)pyridone by O-silylation and immediate addition of Grignard compounds. Chiral piperidine derivatives, e.g. (S)-(+)-coniine and (5S,9S)-(+)-indolozidine 167B, were synthesised in enantiomerically pure form using these highly regio- and stereoselective reactions. After N-galactosylation of 2-pyridone and O-silylation of the N-galactosyl-2-pyridone, addition of a Grignard compound proceeded with high 1,4-regioselectivity and complete diastereoselectivity, to furnish 4-substituted 5,6-dehydro-2-piperidones. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.

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