142389-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142389-13-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,3,8 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142389-13:
(8*1)+(7*4)+(6*2)+(5*3)+(4*8)+(3*9)+(2*1)+(1*3)=127
127 % 10 = 7
So 142389-13-7 is a valid CAS Registry Number.
142389-13-7Relevant academic research and scientific papers
Ernst,Laatsch
, p. 461 - 462 (1992)
By reaction of 1,4-naphthoquinone (1) and trialkylboranes in the presence of oxygen and oxidative work-up, sterically hindered 2-alkyl-1,4-naphthoquinones and, on addition of magnesium bromide, 2,3-bisalkyl-1,4-naphthoquinones are obtained.
