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1233703-80-4

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1233703-80-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233703-80-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,7,0 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1233703-80:
(9*1)+(8*2)+(7*3)+(6*3)+(5*7)+(4*0)+(3*3)+(2*8)+(1*0)=124
124 % 10 = 4
So 1233703-80-4 is a valid CAS Registry Number.

1233703-80-4Downstream Products

1233703-80-4Relevant articles and documents

Stereoselective conjugate addition of carbonyl compounds to maleimides using a diaminomethyleneindenedione organocatalyst

Nakashima, Kosuke,Kawada, Masahiro,Hirashima, Shin-ichi,Kosugi, Ayako,Kato, Mana,Yoshida, Akihiro,Koseki, Yuji,Miura, Tsuyoshi

, p. 888 - 895 (2016/09/02)

A diaminomethyleneindenedione motif can serve as an excellent double hydrogen bonding donor. Bifunctional chiral primary amine 3 bearing a diaminomethyleneindenedione motif is an excellent organocatalyst to promote the asymmetric conjugate additions of va

Enantioselective Michael addition of ketones to maleimides catalyzed by bifunctional monosulfonyl DPEN salt

Yu, Feng,Sun, Xiaomin,Jin, Zhichao,Wen, Shigang,Liang, Xinmiao,Ye, Jinxing

supporting information; experimental part, p. 4589 - 4591 (2010/11/18)

An unprecedented enantioselective Michael addition of various ketones to maleimides catalyzed by a simple bifunctional primary amine, monosulfonyl DPEN salt, is reported and provides the desired adducts in good to excellent yields (up to 99%) with excellent enantioselectivities (up to 99%).

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