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2-ethynyl-9H-xanthen-9-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1223558-99-3

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1223558-99-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1223558-99-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,3,5,5 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1223558-99:
(9*1)+(8*2)+(7*2)+(6*3)+(5*5)+(4*5)+(3*8)+(2*9)+(1*9)=153
153 % 10 = 3
So 1223558-99-3 is a valid CAS Registry Number.

1223558-99-3Downstream Products

1223558-99-3Relevant academic research and scientific papers

A base-promoted desalicyloylative dimerization of 3-(1-alkynyl)chromones: An unusual approach to 2-alkynyl xanthones

Xie, Fuchun,Pan, Xuan,Lin, Shijun,Hu, Youhong

supporting information; experimental part, p. 1378 - 1381 (2010/06/19)

A novel base-promoted cascade desalicyloylative dimerization of 3-(1-alkynyl)chromones to produce 2-alkynyl xanthones has been developed. This tandem process involves multiple reactions, such as Michael additions/ cyclizations/desalicyloylation without a transition metal catalyst and inert atmosphere.

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