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3-Buten-2-one, 4-[4-(methylsulfonyl)phenyl]- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81559-91-3

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81559-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81559-91-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,5 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81559-91:
(7*8)+(6*1)+(5*5)+(4*5)+(3*9)+(2*9)+(1*1)=153
153 % 10 = 3
So 81559-91-3 is a valid CAS Registry Number.

81559-91-3Relevant academic research and scientific papers

4-hydroxycoumarin derivatives. Part XIV (I). 3-(1'-p-alkylthiophenyl-2'-acetylethyl)-4-hydroxycoumarins and their oxidation products

Sulko, Jerzy

, p. 403 - 411 (2007/10/03)

3-(1'-p-Methylthiophenyl-2'-acetylethyl)-4-hydroxycoumarin and 3-(1'-p-ethylthiophenyl-2'-acetylethyl)-4-hydroxycoumarin, and their sulfoxides and sulfones were synthesized. Acetylation of the corresponding sulfides by acetic anhydride in pyridine gave 4-

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