134209-59-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134209-59-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,2,0 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 134209-59:
(8*1)+(7*3)+(6*4)+(5*2)+(4*0)+(3*9)+(2*5)+(1*9)=109
109 % 10 = 9
So 134209-59-9 is a valid CAS Registry Number.
134209-59-9Relevant articles and documents
Synthesis of Selectively Protected Polyaza Macrocycles
Qian, Ligang,Sun, Zhong,Mertes, Mathias P.,Mertes, Kristin Bowman
, p. 4904 - 4907 (2007/10/02)
A general route to selectively protected polyaza macrocycles has been developed using a mixture of diethylphosphoryl and tosyl groups for protection of linear chain polyamines.Condensation of N-(diethoxyphosphoryl)-N',N''-ditosyldiethylenetriamine (1a), N
