121739-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121739-77-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,3 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121739-77:
(8*1)+(7*2)+(6*1)+(5*7)+(4*3)+(3*9)+(2*7)+(1*7)=123
123 % 10 = 3
So 121739-77-3 is a valid CAS Registry Number.
121739-77-3Relevant articles and documents
Synthesis of New Fluorescent Dyes in the Benzoxazinone Series: Aminobenzoxazinones with a Rigidized Structure
Bris, Marie-Therese Le
, p. 429 - 433 (2007/10/02)
The stucture of 7-aminobenzoxazinones was modified by enclosing their amino nitrogen atom in a julolidyl ring.This rigidization was expected to enchance the fluorescence performances in this series.Several fluorescent dyes and styryl derivatives were prep
