Cas 123475-72-9,C18H13NO3

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Check Digit Verification of cas no

The CAS Registry Mumber 123475-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,4,7 and 5 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123475-72:
(8*1)+(7*2)+(6*3)+(5*4)+(4*7)+(3*5)+(2*7)+(1*2)=119
119 % 10 = 9
So 123475-72-9 is a valid CAS Registry Number.

123475-72-9Upstream product

132113-77-0 Methanesulfonic acid 2-[3-(4-hydroxy-phenyl)-1,4-dioxo-1,4-dihydro-naphthalen-2-ylamino]-ethyl ester

123475-72-9Downstream Products

123475-72-9Relevant academic research and scientific papers

The preparation of the aza-spirobicyclic system of discorhabdin C via an intramolecular phenolate alkylation

Kublak,Confalone

, p. 3845 - 3848 (1990)

A model study designed for the synthesis of the discorhabdin alkaloids is presented. The key reaction is the intramolecular para-phenolate alkylation of the mesyloxy aminonaphthoquinone 10 to afford the target tetracyclic system 11.

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