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88563-99-9

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88563-99-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88563-99-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,5,6 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 88563-99:
(7*8)+(6*8)+(5*5)+(4*6)+(3*3)+(2*9)+(1*9)=189
189 % 10 = 9
So 88563-99-9 is a valid CAS Registry Number.

88563-99-9Relevant articles and documents

(S,S)-(+)-pseudoephedrine as chiral auxiliary in asymmetric conjugate addition and tandem conjugate addition/α-alkylation reactions

Reyes, Efraim,Vicario, Jose L.,Carrillo, Luisa,Badia, Dolores,Uria, Uxue,Iza, Ainara

, p. 7763 - 7772 (2007/10/03)

(Chemical Equation Presented) Organolithium reagents undergo highly regio- and diastereoselective 1,4-addition to (S,S)-(+)-pseudoephedrine enamides furnishing the corresponding β-alkyl-substituted adducts in excellent yields and diastereoselectivities. In addition, the intermediate lithium enolates generated after the conjugate addition step undergo a highly diastereoselective alkylation reaction, furnishing α,β-dialkyl- substituted amides in high yields. The obtained adducts have been converted into chiral nonracemic β-alkyl- and α,β-dialkyl-substituted carboxylic acids and γ-alkyl- and β,γ-dialkyl-substituted alcohols using very simple and high-yielding procedures.

A convergent asymmetric synthesis of (-)-malyngolide and its three stereoisomers

Kogure,Eliel

, p. 576 - 578 (2007/10/02)

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