139137-82-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139137-82-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,3 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139137-82:
(8*1)+(7*3)+(6*9)+(5*1)+(4*3)+(3*7)+(2*8)+(1*2)=139
139 % 10 = 9
So 139137-82-9 is a valid CAS Registry Number.
139137-82-9Relevant academic research and scientific papers
Synthesis of bryophyte components 4. Syntheses of Ricciocarpin A
Eicher,Massonne,Herrmann
, p. 1173 - 1176 (2007/10/02)
Two routes are developed for the synthesis of racemic Ricciocarpin A [(3R*, 4aS*, 8aR*)-3-(3-furyl)-5,5-dimethyl-3,4,4a,5,6,7,8,8 a-octahydro-1H-2-benzopyran-1-one, 1] from readily available starting materials, which give access to this new biologically a
