70503-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 70503-19-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,5,0 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 70503-19:
(7*7)+(6*0)+(5*5)+(4*0)+(3*3)+(2*1)+(1*9)=94
94 % 10 = 4
So 70503-19-4 is a valid CAS Registry Number.
70503-19-4Relevant academic research and scientific papers
Merocyanine Dyes from 4-Dicyanomethylene-2,6-dimethyl-4H-pyran
Allan, J. A. Van,Reynolds, G. A.
, p. 1585 - 1586 (2007/10/02)
Neutral dyes were prepared by reacting 1-ethyl-2quinolinium iodide with 4-dicyanomethylene-2,6-dimethyl-4H-pyran and then condensing the resulting product with an aromatic aldehyde.
