303730-52-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 303730-52-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,3,7,3 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 303730-52:
(8*3)+(7*0)+(6*3)+(5*7)+(4*3)+(3*0)+(2*5)+(1*2)=101
101 % 10 = 1
So 303730-52-1 is a valid CAS Registry Number.
303730-52-1Relevant articles and documents
Reaction of 1-azaazulenes with benzyne
Abe, Noritaka,Mori, Makoto,Fujii, Hiroyuki
, p. 162 - 173 (2007/10/03)
The reaction of 2-chloro-1-azaazulene (1a) with benzyne, prepared from (phenyl)-[o-(trimethylsilyl)phenyl]iodonium triflate and tetrabutylammonium fluoride, gave 1-phenyl-1-azaazulen-2(1H)-one (4) and 8-[2-(2-chloro-1-azaazylen-6-yl)phenyl]-1-azaazulen-2(