137359-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137359-77-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,5 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137359-77:
(8*1)+(7*3)+(6*7)+(5*3)+(4*5)+(3*9)+(2*7)+(1*7)=154
154 % 10 = 4
So 137359-77-4 is a valid CAS Registry Number.
137359-77-4Relevant academic research and scientific papers
A novel efficient route to hexahydrodibenzofuran derivatives
Berrier,Jouannetaud,Jacquesy,Kigabo
, p. 6681 - 6688 (2007/10/02)
Synthesis of 2 and 4-aryl cyclohexenones and of hexahydrodibenzofuran derivatives is described. In anhydrous hydrogen fluoride at 0°C, 4-hydroxy-4-methylcyclohex-2 en-1 one 2 reacted to yield ketone 7 (43%). Reaction of ketone 2 with parabromophenol 3b in
