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132659-98-4

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132659-98-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 132659-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,6,5 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 132659-98:
(8*1)+(7*3)+(6*2)+(5*6)+(4*5)+(3*9)+(2*9)+(1*8)=144
144 % 10 = 4
So 132659-98-4 is a valid CAS Registry Number.

132659-98-4Relevant articles and documents

Mechanism driven trans stereospecificity in the Pictet-Spengler reaction. Stereospecific formation of trans-1,2,3-trisubstituted-tetrahydro β-carbolines by condensation of N(b)-diphenylmethyl tryptophan isopropyl esters with aldehydes

Czerwinski,Deng,Cook

, p. 4721 - 4724 (2007/10/02)

Stereoelectronic control in the Pictet-Spengler condensation of N(b)-alkylsubstituted tryptophan alkyl esters has been employed to promote 100% stereoselectivity in this process. The reaction of N(b)-diphenylmethyl tryptophan isopropyl ester 8 with acetal

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