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1043959-33-6

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1043959-33-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1043959-33-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,3,9,5 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1043959-33:
(9*1)+(8*0)+(7*4)+(6*3)+(5*9)+(4*5)+(3*9)+(2*3)+(1*3)=156
156 % 10 = 6
So 1043959-33-6 is a valid CAS Registry Number.

1043959-33-6Downstream Products

1043959-33-6Relevant articles and documents

Direct catalytic asymmetric mannich-type reaction of β-keto phosphonate using a dinuclear Ni2-Schiff base complex

Chen, Zhihua,Yakura, Kenichiro,Matsunaga, Shigeki,Shibasaki, Masakatsu

supporting information; experimental part, p. 3239 - 3242 (2009/05/27)

(Chemical Equation Presented) Direct catalytic asymmetric Mannich-type reactions of β-keto phosphonates are described. A homodinuclear Ni 2-Schiff base complex promoted the reaction at 0°C, giving β-amino phosphonates in up to 90% yield, 20:1 dr, and 99% ee. Control experiments suggested that two Ni metals are important for achieving high yield and stereoselectivity.

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