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9H-Xanthene, 4-methoxy- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

38731-90-7

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38731-90-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 38731-90-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,7,3 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 38731-90:
(7*3)+(6*8)+(5*7)+(4*3)+(3*1)+(2*9)+(1*0)=137
137 % 10 = 7
So 38731-90-7 is a valid CAS Registry Number.

38731-90-7Relevant academic research and scientific papers

Reaction of benzyne with salicylaldehydes: General synthesis of xanthenes, xanthones, and xanthols

Okuma, Kentaro,Nojima, Akiko,Matsunaga, Nahoko,Shioji, Kosei

supporting information; experimental part, p. 169 - 171 (2009/06/20)

The reaction of salicylaldehydes with benzyne prepared from o-trimethylsilyphenyl triflate and CsF gave xanthenes and xanthones. When the reaction was carried out under basic conditions, 9-hydroxyxanthenes (xanthols) were obtained in good yields.

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