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157117-26-5

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157117-26-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157117-26-5 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 6 respectively.
Calculate Digit Verification of CAS Registry Number 157117-26:
(8*1)+(7*5)+(6*7)+(5*1)+(4*1)+(3*7)+(2*2)+(1*6)=125
125 % 10 = 5
So 157117-26-5 is a valid CAS Registry Number.

157117-26-5Relevant articles and documents

Stereocontrolled synthesis of novel phytosphingosine-type glucosaminocerebrosides

Murakami, Teiichi,Taguchi, Kazuhiro

, p. 989 - 1004 (2007/10/03)

D-ribo-Phytosphingosine 1 was conveniently synthesized from N-benzoyl- D-glucosamine 3 by an improved route in which regioselective O- methanesulfonation and diastereoselective Grignard addition are involved as key steps. Using a synthetic intermediate of 1, novel D-ribo- phytosphingosine-type glycolipids 2a and 2b, unnatural homologues of antifungal cerebrosides Halicylindrosides, were efficiently synthesized in a stereocontrolled manner.

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