134639-75-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134639-75-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,6,3 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 134639-75:
(8*1)+(7*3)+(6*4)+(5*6)+(4*3)+(3*9)+(2*7)+(1*5)=141
141 % 10 = 1
So 134639-75-1 is a valid CAS Registry Number.
134639-75-1Relevant academic research and scientific papers
An improved route to 1,3-bis-[4-(4-aminophenoxy)-benzoyl]benzene and related compounds
Lassila,Ford
, p. 229 - 234 (2007/10/02)
The title compounds is prepared in 75% overall yield in two steps. In the first step, the entire carbon framework is assembled from readily available materials with excellent regioselectivity. The second step is a simple nitro group hydrogenation.
