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91670-80-3

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91670-80-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91670-80-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,7 and 0 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91670-80:
(7*9)+(6*1)+(5*6)+(4*7)+(3*0)+(2*8)+(1*0)=143
143 % 10 = 3
So 91670-80-3 is a valid CAS Registry Number.

91670-80-3Relevant academic research and scientific papers

Synthesis of 20-Epipseudoaspidospermidine, 20-Epidehydropseudoaspidospermidine, and 20-Epipseudovincadifformine

Wenkert, Ernest,Porter, Barry,Simmons, Dana P.,Ardisson, Janick,Kunesch, Nicole,Poisson, Jacques

, p. 3733 - 3742 (2007/10/02)

A short synthesis of 3-acetyl-5-ethylpyridine and its three-step conversion into pentacycles of the Aspidosperma alkaloid type by the β-acylpyridine reduction-cyclization route are described.The reductive transformations of the resultant pentacycles into

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