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(4R,5S)-4-(tert-butyldiphenylsilyloxy)methyl-5-(3,4-methylenedioxyphenyl)dihydro-3(2H)-furanone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

189557-90-2

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189557-90-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189557-90-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,5,5 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 189557-90:
(8*1)+(7*8)+(6*9)+(5*5)+(4*5)+(3*7)+(2*9)+(1*0)=202
202 % 10 = 2
So 189557-90-2 is a valid CAS Registry Number.

189557-90-2Upstream product

189557-90-2Relevant academic research and scientific papers

Stereoselective model synthesis of the optically active olivil type of lignan from D-xylose.

Yamauchi,Kinoshita

, p. 1563 - 1571 (2007/10/03)

The olivil type of lignan, (2S,3R,4R)-4-benzyl-4-hydroxy - 3 - hydroxymethyl - 2 - (3,4 - methylenedioxyphenyl)tetrahydrofuran, was stereoselectively synthesized from D-xylose.

Total synthesis of (+)-paulownin

Okazaki, Momotoshi,Ishibashi, Fumito,Shuto, Yoshihiro,Taniguchi, Eiji

, p. 743 - 745 (2007/10/03)

(+)-Paulownin, a furofuran lignan from Paulownia tomentosa, was stereoselectively synthesized from (R)-(+)-3-hydroxybutanolide in 12 steps with a yield of 4.4%.

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