157403-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157403-23-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,4,0 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157403-23:
(8*1)+(7*5)+(6*7)+(5*4)+(4*0)+(3*3)+(2*2)+(1*3)=121
121 % 10 = 1
So 157403-23-1 is a valid CAS Registry Number.
157403-23-1Relevant academic research and scientific papers
Preparation and Reaction of 1H-Pyrazoloindoles as Isoelectronic Analogues of Azulene (Pseudoazulene)
Shen, Jing-Kang,Katayama, Hajime
, p. 1871 - 1878 (2007/10/02)
We have prepared 1H-pyrazoloindoles for the first time and have found that they have the chemical behaviour of isoelectronic analogues of azulene (pseudoazulene).
