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1019777-26-4

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1019777-26-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1019777-26-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,9,7,7 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1019777-26:
(9*1)+(8*0)+(7*1)+(6*9)+(5*7)+(4*7)+(3*7)+(2*2)+(1*6)=164
164 % 10 = 4
So 1019777-26-4 is a valid CAS Registry Number.

1019777-26-4Relevant articles and documents

Total Syntheses of FR-901235, Auxarthrones A-D, and Lamellicolic Anhydride

Kiyotaki, Kotaro,Kayukawa, Takuto,Imayoshi, Ayumi,Tsubaki, Kazunori

, p. 9220 - 9224 (2020/11/30)

In our previous study, an unusual rearrangement reaction was discovered whereby dinaphthyl ketones with three hydroxy groups at restricted positions were transformed into a phenalenone ring and a benzene ring. Using the rearrangement as a key reaction, the first total syntheses of FR-901235 and auxarthrones A-D from an unstable triketone common intermediate are described. Furthermore, lamellicolic anhydride was synthesized from the triketone. This conversion is part of the putative biosynthetic pathway and was achieved experimentally for the first time.

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