139618-22-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139618-22-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,1 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139618-22:
(8*1)+(7*3)+(6*9)+(5*6)+(4*1)+(3*8)+(2*2)+(1*2)=147
147 % 10 = 7
So 139618-22-7 is a valid CAS Registry Number.
139618-22-7Relevant articles and documents
Synthetic approach to identification of periplaneta sex pheromones
Harada, Takeo,Takahashi, Takashi,Takahashi, Shozo
, p. 369 - 372 (2007/10/02)
Syntheses of the proposed structure of periplanone J (1) and its epimer 2, and the discussion on the true structure of PJ based on the spectral study of 1,2 and the natural PJ are described.