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Toluene-4-sulfonic acid (3aR,5R,6S,6aR)-2,2-dimethyl-6-methylsulfanylthiocarboxyoxy-tetrahydro-furo[2,3-d][1,3]dioxol-5-ylmethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

691389-04-5

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691389-04-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 691389-04-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,3,8 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 691389-04:
(8*6)+(7*9)+(6*1)+(5*3)+(4*8)+(3*9)+(2*0)+(1*4)=195
195 % 10 = 5
So 691389-04-5 is a valid CAS Registry Number.

691389-04-5Relevant academic research and scientific papers

Synthesis and structure analyses of 1,2,4-tri-O-acetyl-3,5-di-deoxy-5-C- (isopropyl- and phenyl-phosphinyl)-D-erythro-pentopyranoses

Oshikawa, Tatsuo,Seo, Kuniaki,Yamashita, Mitsuji,Hanaya, Tadashi,Hamauzu, Yoshihiro,Yamamoto, Hiroshi

, p. 559 - 566 (2007/10/03)

1H NMR spectroscopy for phosphorus containing hetero sugars (phospha sugars 9a-d and 17a-d) revealed the stereoisomeric configurations and the chair conformations for α - and β -1,2,4-tri-O-acetyl-3,5-di- deoxy-5-C-(isopropyl- and phenyl-phosphinyl)-D-erythro-pentopyranoses. The conformations of the title compounds were characterized as 4C 1 chair form in CDCl3 by 1H NMR (500 MHz), and the conformations were in accord with those in the solid state determined by X-ray crystallographic analyses.

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