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233751-73-0

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233751-73-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 233751-73-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,3,7,5 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 233751-73:
(8*2)+(7*3)+(6*3)+(5*7)+(4*5)+(3*1)+(2*7)+(1*3)=130
130 % 10 = 0
So 233751-73-0 is a valid CAS Registry Number.

233751-73-0Relevant articles and documents

Syntheses of the optically active terpene hydroxyphenylselenides

Scianowski, Jacek,WeLniak, MirosLaw

experimental part, p. 1440 - 1447 (2010/03/24)

The optically active hydroxyphenylselenides derived from the p-menthane, carane, and pinane systems have been obtained. Two methods of hydroxyphenylselenides synthesis have been compared. The first method is based on the reaction of alkenes with N-(phenylseleno)succinimide in the presence of water, and the second from epoxides as a result of the reaction with sodium benzeneselenolate. The influence of the substrate structures on the composition of the obtained products has been demonstrated.

Metallated 2-alkenyl sulfoximines in asymmetric synthesis: Regio- and stereoselective synthesis of highly substituted oxabicyclic ethers and studies towards the total syntheses of the euglobals G1 and G2 and arenaran A

Reggelin, Michael,Gerlach, Matthias,Vogt, Melanie

, p. 1011 - 1031 (2007/10/03)

2-Cyclopentenyl- and 2-cyclohexenylmethyl sulfoximines can be converted into angular carbon-functionalised, highly substituted, isomerically pure (ds ± 98%) 2-oxabicyclo[3.3.0]octanes and 2-oxabicyclo[3.4.0]nonanes in high yields by a convenient one-pot sequence. Molecular frameworks such as these can be found in many biologically active natural products. In addition to the methodological work, we report on studies towards the total synthesis of the euglobals G1 and G2 and arenaran A.

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