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1114889-20-1

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1114889-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1114889-20-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,1,4,8,8 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1114889-20:
(9*1)+(8*1)+(7*1)+(6*4)+(5*8)+(4*8)+(3*9)+(2*2)+(1*0)=151
151 % 10 = 1
So 1114889-20-1 is a valid CAS Registry Number.

1114889-20-1Downstream Products

1114889-20-1Relevant academic research and scientific papers

Aldol-type reaction of a 4-pyrone: a straightforward approach to 4-pyrone-containing natural products

Sengoku, Tetsuya,Takemura, Takuma,Fukasawa, Emi,Hayakawa, Ichiro,Kigoshi, Hideo

, p. 325 - 328 (2009)

A straightforward approach to 4-pyrone-containing natural products has been developed, which includes an aldol-type reaction between 2,6-diethyl-3,5-dimethyl-4-pyrone and aldehydes. The counter cation of the carbanion of the pyrone was found to play an im

Total synthesis and biological evaluation of auripyrones A and B

Hayakawa, Ichiro,Takemura, Takuma,Fukasawa, Emi,Ebihara, Yuta,Sato, Natsuki,Nakamura, Takayasu,Suenaga, Kiyotake,Kigoshi, Hideo

, p. 1077 - 1092 (2013/01/15)

The total synthesis of auripyrones was achieved by using a novel aldol-type reaction of γ-pyrone as a key step. From this synthetic work, we have established the stereostructure and absolute configuration of auripyrone B. Furthermore, the cytotoxicities o

Total synthesis of auripyrones A and B and determination of the absolute configuration of auripyrone B

Hayakawa, Ichiro,Takemura, Takuma,Fukasawa, Emi,Ebihara, Yuta,Sato, Natsuki,Nakamura, Takayasu,Suenaga, Kiyotake,Kigoshi, Hideo

supporting information; experimental part, p. 2401 - 2405 (2010/06/17)

(Figure Presented) The winner takes it aldol: The total synthesis of auripyrones A and B was achieved using a diastereoselective aldol-type reaction with 2, 6-diethyl-3, 5-dimethyl-4-pyrone as a key step. The stereostructure and absolute configura-tion of auripyrone B has also been determined.

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