139083-25-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139083-25-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,8 and 3 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139083-25:
(8*1)+(7*3)+(6*9)+(5*0)+(4*8)+(3*3)+(2*2)+(1*5)=133
133 % 10 = 3
So 139083-25-3 is a valid CAS Registry Number.
139083-25-3Relevant academic research and scientific papers
An efficient and general synthesis of indolo[2,3-a]carbazoles using the Fischer indole synthesis
Hu, Yong-Zhou,Chen, You-Qin
, p. 42 - 48 (2007/10/03)
Synthetically important indolo[2,3-a]carbazoles were obtained in a one-pot reaction via Fischer indole synthesis starting from 2-amino-cyclohexanone hydrochloride and substituted arylhydrazines hydrochloride in the presence of acidic media.
