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1199794-65-4

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1199794-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1199794-65-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,9,7,9 and 4 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1199794-65:
(9*1)+(8*1)+(7*9)+(6*9)+(5*7)+(4*9)+(3*4)+(2*6)+(1*5)=234
234 % 10 = 4
So 1199794-65-4 is a valid CAS Registry Number.

1199794-65-4Relevant articles and documents

A Scalable Total Synthesis of the Antitumor Agents Et-743 and Lurbinectedin

He, Weiming,Zhang, Zhigao,Ma, Dawei

supporting information, p. 3972 - 3975 (2019/02/24)

An efficient and scalable approach is described for the total synthesis of the marine natural product Et-743 and its derivative lubinectedin, which are valuable antitumor compounds. The method delivers 1.6 % overall yield in 26 total steps from Cbz-protected (S)-tyrosine. It features the use of a common advanced intermediate to create the right and left parts of these compounds, and a light-mediated remote C?H bond activation to assemble a benzo[1,3]dioxole-containing intermediate.

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