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1338703-90-4

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1338703-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338703-90-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,7,0 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1338703-90:
(9*1)+(8*3)+(7*3)+(6*8)+(5*7)+(4*0)+(3*3)+(2*9)+(1*0)=164
164 % 10 = 4
So 1338703-90-4 is a valid CAS Registry Number.

1338703-90-4Relevant academic research and scientific papers

Stereoselective synthesis of 2,6-trans-tetrahydropyran via primary diamine-catalyzed oxa-conjugate addition reaction of α,β-unsaturated ketone: Total synthesis of psymberin

Byeon, Seong Rim,Park, Heekwang,Kim, Hyoungsu,Hong, Jiyong

, p. 5816 - 5819 (2012/01/06)

The total synthesis of psymberin was achieved employing a readily available chiral epoxide to prepare two of the three subunits in the natural product. The key reaction was a highly stereoselective organocatalytic oxa-conjugate addition reaction of α,β-un

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