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1228758-53-9

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1228758-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1228758-53-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,7,5 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1228758-53:
(9*1)+(8*2)+(7*2)+(6*8)+(5*7)+(4*5)+(3*8)+(2*5)+(1*3)=179
179 % 10 = 9
So 1228758-53-9 is a valid CAS Registry Number.

1228758-53-9Upstream product

1228758-53-9Downstream Products

1228758-53-9Relevant academic research and scientific papers

Copper catalyzed asymmetric propargylation of aldehydes

Fandrick, Daniel R.,Fandrick, Keith R.,Reeves, Jonathan T.,Tan, Zhulin,Tang, Wenjun,Capacci, Andrew G.,Rodriguez, Sonia,Song, Jinhua J.,Lee, Heewon,Yee, Nathan K.,Senanayake, Chris H.

supporting information; experimental part, p. 7600 - 7601 (2010/07/08)

The highly enantio- and regioselective copper catalyzed asymmetric propargylation of aldehydes with a propargyl borolane reagent is reported. The methodology demonstrated broad functional group tolerance and provided high enantioselectivities for aliphatic, vinyl, and aryl aldehydes. The utility of the TMS homopropargylic alcohols was demonstrated by the facile conversion to a chiral dihydropyranone.

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