157650-56-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157650-56-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,6,5 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 157650-56:
(8*1)+(7*5)+(6*7)+(5*6)+(4*5)+(3*0)+(2*5)+(1*6)=151
151 % 10 = 1
So 157650-56-1 is a valid CAS Registry Number.
157650-56-1Relevant articles and documents
9-(4-Dialkylaminostyryl)-Acridines - A New Class of Acidochromic Dyes
Lindauer, Heike,Czerney, Peter,Grummt, Urlich-W.
, p. 521 - 524 (2007/10/02)
A series of new acidochromic 9-(4-dialkylaminostyryl)-acridines (1) were synthesized and characterized by means of elemental analysis, m.p., mass and 1H-NMR-spectra.The colour change in the presence of perchloric acid and the pKa was investigat