84477-19-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84477-19-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,4,7 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 84477-19:
(7*8)+(6*4)+(5*4)+(4*7)+(3*7)+(2*1)+(1*9)=160
160 % 10 = 0
So 84477-19-0 is a valid CAS Registry Number.
84477-19-0Relevant articles and documents
Cyclization of 4-Hydroxy-(E)-2-alkenoic Esters: Simple Synthesis of Butenolides
Tanikaga, Rikuhei,Yamashita, Hiroshi,Kaji, Aritsune
, p. 416 - 417 (2007/10/02)
Simple treatment of 4-hydroxy-(E)-2-alkenoic esters with benzenethiol leads to cyclization to give 3-phenylthio-4-alkanolides, which are easily converted into 3-phenylthio-2-alken-4-olides and 2-alken-4-olides (Δα,β-butenolides).
