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672963-94-9

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672963-94-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 672963-94-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,2,9,6 and 3 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 672963-94:
(8*6)+(7*7)+(6*2)+(5*9)+(4*6)+(3*3)+(2*9)+(1*4)=209
209 % 10 = 9
So 672963-94-9 is a valid CAS Registry Number.

672963-94-9Relevant articles and documents

Non-hydrogen bond catalyst-mediated diastereoselective conjugate additions of 5: H -oxazol-4-ones to o -hydroxyphenyl-substituted p -quinone methides

Fang, Fang,Huang, Anqi,Li, Pengfei,Li, Wenjun,Liu, Guokai,Wang, Ziyang

supporting information, p. 6807 - 6811 (2020/10/02)

An efficient DBU-catalyzed conjugate addition of 5H-oxazol-4-ones to o-hydroxyphenyl-substituted p-quinone methides has been developed, affording the valuable diarylmethanes in high yields with excellent diastereoselectivity. This strategy demonstrates a robust access to a wide range of diarylmethane derivatives possessing biologically significant o-hydroxyphenol and p-hydroxyphenol moieties under mild reaction conditions.

5H-Oxazol-4-ones as Building Blocks for Asymmetric Synthesis of α-Hydroxycarboxylic Acid Derivatives

Trost, Barry M.,Dogra, Kalindi,Franzini, Maurizio

, p. 1944 - 1945 (2007/10/03)

5H-Alkyl-2-phenyl-oxazol-4-ones, a little-known heterocyclic ring system, are readily available via a microwave-assisted, sodium fluoride catalyst cyclization of mono-α-haloimides, which in turn are accessed by N-acylation of benzamides with α-bromo acid

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