138806-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138806-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,0 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138806-40:
(8*1)+(7*3)+(6*8)+(5*8)+(4*0)+(3*6)+(2*4)+(1*0)=143
143 % 10 = 3
So 138806-40-3 is a valid CAS Registry Number.
138806-40-3Relevant academic research and scientific papers
Synthesis of ethynylcyclopropanes from epoxides
Narjes,Schaumann
, p. 1168 - 1170 (2007/10/02)
The title compounds are prepared by an efficient one-pot reaction involving ring-opening of an epoxide with lithium 3-trimethylsilyl-1-phenylthio-2-propyn-1-ide, tosylation of the intermediate alkoxide, and finally deprotonation. In an alternative approac
