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Toluene-4-sulfonic acid (2S,3S)-3-hydroxy-2,4-dimethyl-pentyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

158557-15-4

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158557-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158557-15-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,5,5 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 158557-15:
(8*1)+(7*5)+(6*8)+(5*5)+(4*5)+(3*7)+(2*1)+(1*5)=164
164 % 10 = 4
So 158557-15-4 is a valid CAS Registry Number.

158557-15-4Relevant academic research and scientific papers

Total Synthesis of the Polyene Macrolide Antibiotic Roxaticin. II. Total Synthesis of the Roxaticin

Mori, Yuji,Asai, Motoya,Kawade, Jun-ichiro,Furukawa, Hiroshi

, p. 5315 - 5330 (1995)

Roxaticin has been synthesized in a convergent manner from the polyol segment 2, which was prepared by the Julia coupling reaction of sulfone 4 and aldehyde 8, and the polyene phosphonate 3.The cyclization was achieved by macrolactonization.

Total synthesis of the polyene macrolide roxaticin

Mori, Yuji,Asai, Motoya,Kawade, Jun-Ichiro,Okumura, Akiko,Furukawa, Hiroshi

, p. 6503 - 6506 (2007/10/02)

Roxaticin has been synthesized in a convergent manner. The polyol and polyene fragments were coupled by Horner-Emmons reaction and the cyclization was achieved by macrolactonization.

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