159889-04-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159889-04-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,8,8 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 159889-04:
(8*1)+(7*5)+(6*9)+(5*8)+(4*8)+(3*9)+(2*0)+(1*4)=200
200 % 10 = 0
So 159889-04-0 is a valid CAS Registry Number.
159889-04-0Relevant academic research and scientific papers
Abe, Noritaka,Kakehi, Akikazu
, p. 2487 - 2493 (1994)
The reaction of ethyl 2-hydrazino-1-azaazulene-3-carboxylate with diphenylcyclopropenone (DPP) gave ethyl (Z)-2--1-azaazulene-3-carboxylate, ethyl 8,9-diphenyl-1,2,9b-triazaindenoazulene-3-carboxylat
