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99657-04-2

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99657-04-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99657-04-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,5 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 99657-04:
(7*9)+(6*9)+(5*6)+(4*5)+(3*7)+(2*0)+(1*4)=192
192 % 10 = 2
So 99657-04-2 is a valid CAS Registry Number.

99657-04-2Downstream Products

99657-04-2Relevant articles and documents

Methods for Indole Alkaloid Synthesis: A Study of the Compatibility of the Indole-2,3-Quinodimethane Strategy for the Synthesis of 16-Methoxy-Substituted Aspidosperma-Type Alkaloids. Synthesis of (+)- and (-)-16-Methoxytabersonine

Cardwell, Kevin,Hewitt, Brian,Ladlow, Mark,Magnus, Philip

, p. 2242 - 2248 (2007/10/02)

4-Methoxy-2-nitroaniline (5) is converted into 1-carbomethoxy-6-methoxy-3-formyl-2-methylindole (10) in an overall yield of 28percent through five steps.The derived imine from 10 and 2-(phenylthio)ethylamine on treatment with acid chloride (+/-)-12 gave h

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