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(4S,5S)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-2-phenyl-5-((2R,3S)-3-tridecyl-oxiranyl)-4,5-dihydro-oxazole is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

157117-23-2

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157117-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157117-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,1,1 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157117-23:
(8*1)+(7*5)+(6*7)+(5*1)+(4*1)+(3*7)+(2*2)+(1*3)=122
122 % 10 = 2
So 157117-23-2 is a valid CAS Registry Number.

157117-23-2Relevant academic research and scientific papers

Regio- and stereocontrolled synthesis ofD-erythrosphingosine and phytosphingosine fromDglucosamine

Murakami, Teiichi,Minamikawa, Hiroyuki,Hato, Masakatsu

, p. 745 - 748 (2007/10/02)

D-erythro-Sphingosine (1) and phytosphingosine (2) have been efficiently synthesized from D-glucosamine by utilizing its whole carbon skeleton and functional groups. In this synthetic route, regioselective alkylation of the epoxy-tosylate 9 was achieved with a copper(I)-catalyzed Grignard reagent to give the key intermediate 10, which was converted to both 1 and 2 via regioselective formation of the iodohydrin 11.

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