138173-27-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138173-27-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,7 and 3 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138173-27:
(8*1)+(7*3)+(6*8)+(5*1)+(4*7)+(3*3)+(2*2)+(1*7)=130
130 % 10 = 0
So 138173-27-0 is a valid CAS Registry Number.
138173-27-0Relevant academic research and scientific papers
First synthesis of a strained 14-membered biaryl ether lactone by macrolactonization
Justus,Steglich
, p. 5781 - 5784 (2007/10/02)
The synthesis of biaryl ether lactone 3 by macrolactonization of hydroxy acid 8 under defined Mitsunobu conditions is described. In accord with the literature, attempts to cyclize 8 via carboxyl activation failed.
