220248-47-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220248-47-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,2,4 and 8 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 220248-47:
(8*2)+(7*2)+(6*0)+(5*2)+(4*4)+(3*8)+(2*4)+(1*7)=95
95 % 10 = 5
So 220248-47-5 is a valid CAS Registry Number.
220248-47-5Relevant academic research and scientific papers
A convenient synthesis of 4,5-bis(trifluoromethyl)pyridazines
Kamitori, Yasuhiro,Hojo, Masaru,Yoshioka, Tatsuya
, p. 2221 - 2224 (2007/10/03)
Acid catalyzed selfcondensation of 3-hydrazono-1,1,1 trifluoroalkan-2-ones (2) prepared from 1,1,1-trifIuoroalkan-2,3-diones (1) and 100% hydrazine hydrate afforded 4,5-bis(trifluoromethyl)pyridazines (3) in satisfactory yields.
