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503178-23-2

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503178-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 503178-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,1,7 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 503178-23:
(8*5)+(7*0)+(6*3)+(5*1)+(4*7)+(3*8)+(2*2)+(1*3)=122
122 % 10 = 2
So 503178-23-2 is a valid CAS Registry Number.

503178-23-2Relevant articles and documents

A mild and efficient approach for the deprotection of silyl ethers by sodium periodate

Wang, Mijuan,Li, Chun,Yin, Dali,Liang, Xiao-Tian

, p. 8727 - 8729 (2002)

A mild and efficient method for the deprotection of silyl ethers is reported. The most often used silyl protecting groups, such as TBDMS, TIPS, TMS, TES, TIBS, TPS can be cleaved by NaIO4 furnishing the corresponding alcohol in high yields. This method can be used for a wide range of substrates.

Chiral Auxiliary-Mediated Asymmetric Induction in a Thermal Inverse Electron Demand Hetero-Diels-Alder Reaction. Enantioselective Synthesis of the Taxol A-Ring Side Chain

Swindell, Charles S.,Tao, Ming

, p. 5889 - 5891 (2007/10/02)

Chiral auxiliary-modified ketene acetal 5g and N-benzoylbenzaldimine (4) engage in an endo and ?-facially selective thermal inverse electron demand hetero-Diels-Alder reaction that is the key step in a synthesis of enantiomerically pure taxol A-ring side-chain methyl ester 9.

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