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1233369-73-7

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1233369-73-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233369-73-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,3,6 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1233369-73:
(9*1)+(8*2)+(7*3)+(6*3)+(5*3)+(4*6)+(3*9)+(2*7)+(1*3)=147
147 % 10 = 7
So 1233369-73-7 is a valid CAS Registry Number.

1233369-73-7Downstream Products

1233369-73-7Relevant articles and documents

Highly diastereo- and enantioselective michael additions of 3-substituted oxindoles to maleimides catalyzed by chiral bifunctional thiourea-tertiary amine

Liao, Yu-Hua,Liu, Xiong-Li,Wu, Zhi-Jun,Cun, Lin-Feng,Zhang, Xiao-Mei,Yuan, Wei-Cheng

supporting information; experimental part, p. 2896 - 2899 (2010/09/11)

A highly diastereo- and enantioselective Michael addition reaction with respect to prochiral 3-substituted oxindoles and maleimides by a chiral bifunctional thiourea-tertiary amine catalyst was investigated for the first time. The corresponding adducts, containing a quaternary center at the C3-position of the oxindole as well as a vicinal tertiary center, were generally obtained in good to high yields (up to 92%) with high to excellent diastereo- (up to 99:1 dr) and enantioselectivities (up to 99% ee).

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