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99573-20-3

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99573-20-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99573-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,5,7 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99573-20:
(7*9)+(6*9)+(5*5)+(4*7)+(3*3)+(2*2)+(1*0)=183
183 % 10 = 3
So 99573-20-3 is a valid CAS Registry Number.

99573-20-3Relevant articles and documents

Inverse Electron Demand Diels-Alder Reactions of Heterocyclic Aza Dienes. Studies on the Total Synthesis of Lavendamycin: Investigative Studies on the Preparation of the CDE β-Carboline Ring System and AB Quinoline-5,8-quinone Ring System

Boger, Dale L.,Duff, Steven R.,Panek, James S.,Yasuda, Masami

, p. 5782 - 5789 (2007/10/02)

The investigation and utilization of the inverse electron demand cycloaddition of 3,5,6-tris(ethoxycarbonyl)-1,2,4-triazine with electron-rich olefins and the subsequent implementation of a palladium(0)-mediated β-carboline synthesis for the preparation of the CDE ring system of lavendamycin are detailed.Studies on the introduction and preparation of the 7-aminoquinoline-5,8-quinone AB ring system of lavendamycin are described.

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