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1309060-44-3

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1309060-44-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1309060-44-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,0,6 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1309060-44:
(9*1)+(8*3)+(7*0)+(6*9)+(5*0)+(4*6)+(3*0)+(2*4)+(1*4)=123
123 % 10 = 3
So 1309060-44-3 is a valid CAS Registry Number.

1309060-44-3Relevant academic research and scientific papers

General synthesis of epi-series catechins and their 3-gallates: Reverse polarity strategy

Ohmori, Ken,Yano, Takahisa,Suzuki, Keisuke

supporting information; experimental part, p. 2693 - 2696 (2010/08/21)

A general synthetic route to the epi-series catechins was developed based on the reverse polarity strategy. Aromatic nucleophilic substitution reaction followed by the sulfinyl-metal exchange and cyclization enabled stereo-controlled access to various members of epi-series catechins and their 3-gallates.

Stereocontolled synthesis of (-)-afzelechin: General route to catechin-class polyphenols by solving an SN2 vs. SN1 problem

Ohmori, Ken,Takeda, Megumi,Higuchi, Takashi,Shono, Tomohiro,Suzuki, Keisuke

supporting information, p. 934 - 935,2 (2020/08/31)

Stereocontrolled synthesis of (-)-afzelechin was achieved via the Mitsunobu reaction, where complete stereospecificity was observed when an electron-withdrawing group was introduced to the para-position of the B-ring fragment. Copyright

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