89434-45-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89434-45-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,4,3 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 89434-45:
(7*8)+(6*9)+(5*4)+(4*3)+(3*4)+(2*4)+(1*5)=167
167 % 10 = 7
So 89434-45-7 is a valid CAS Registry Number.
InChI:InChI=1/C20H18O5S/c1-12(21)11-16(13-7-9-14(10-8-13)26(2)24)18-19(22)15-5-3-4-6-17(15)25-20(18)23/h3-10,16,23H,11H2,1-2H3
89434-45-7Relevant 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-
