1189755-28-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1189755-28-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,9,7,5 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1189755-28:
(9*1)+(8*1)+(7*8)+(6*9)+(5*7)+(4*5)+(3*5)+(2*2)+(1*8)=209
209 % 10 = 9
So 1189755-28-9 is a valid CAS Registry Number.
1189755-28-9Relevant academic research and scientific papers
Ibrahim, Magdy A.
, p. 7687 - 7690 (2009)
4-Hydroxycoumarin-3-carboxaldehyde (5) was obtained from chromone-3-carboxaldehyde (1) via chromone-3-carboxamide (2) and 3-aminomethylene-2H-chroman-2,4-dione (3). 3-Alkylaminomethylenechroman-2,4-diones (7,8) were obtained from the reaction of primary a
