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143800-49-1

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143800-49-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143800-49-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,8,0 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 143800-49:
(8*1)+(7*4)+(6*3)+(5*8)+(4*0)+(3*0)+(2*4)+(1*9)=111
111 % 10 = 1
So 143800-49-1 is a valid CAS Registry Number.

143800-49-1Relevant articles and documents

Use of 1,3-Oxazolidin-2-one Derivatives of 3-Borylpropenoic Acids as β-Hydroxy Acrylic Acid Equivalents in the Asymmetric Diels-Alder Reaction Catalyzed by a Chiral Titanium Reagent

Narasaka, Koichi,Yamamoto, Ichiro

, p. 5743 - 5754 (2007/10/02)

Catalytic asymmetric Diels-Alder reaction was developed by employing 3-(3-borylpropenoyl)-1,3-oxazolidin-2-one as a β-hydroxyacrylic acid equivalent.With a catalytic amount of the titanium reagent, 3-(3-borylpropenoyl)-1,3-oxazolidin-2-ones react smoothly

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