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(S)-2,2,2-trichloroethyl 4-((R)-2-(benzyloxy)-1-(7-methyl-6-(methylsulfonyloxy)benzo[d][1,3]dioxol-4-yl)ethyl)-2-(2-bromo-5-hydroxy-4-methoxy-3-methylbenzyl)-5-methyl-3-oxo-3,4-dihydropyrazine-1(2H)-carboxylate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1234550-73-2

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1234550-73-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1234550-73-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,5,5 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1234550-73:
(9*1)+(8*2)+(7*3)+(6*4)+(5*5)+(4*5)+(3*0)+(2*7)+(1*3)=132
132 % 10 = 2
So 1234550-73-2 is a valid CAS Registry Number.

1234550-73-2Relevant academic research and scientific papers

Synthetic study toward ecteinascidin 743: Concise construction of the diazabicyclo[3.3.1]nonane skeleton and assembly of the pentacyclic core

Enomoto, Taro,Yasui, Yoshizumi,Takemoto, Yoshiji

, p. 4876 - 4879 (2010/10/19)

(Figure Presented) Synthesis of the pentacyclic core of ecteinascidin 743 is described. This synthesis features concise construction of the diazabicyclo[3.3.1]nonane skeleton using gold(I)-catalyzed one-pot keto amide formation, acid-promoted enamide formation, and oxidative Friedel-Crafts cyclization as the key steps.

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