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25753-21-3

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25753-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25753-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,7,5 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 25753-21:
(7*2)+(6*5)+(5*7)+(4*5)+(3*3)+(2*2)+(1*1)=113
113 % 10 = 3
So 25753-21-3 is a valid CAS Registry Number.

25753-21-3Relevant articles and documents

Preparation and reactions of 2,4,6-tris(trifluoromethyl)phenylamine

Ahlemann, Jens-T,Roesky, Herbert W.,Noltemeyer, Mathias,Schmidt, Hans-G.,Markovsky, Leonid N.,Shermolovich, Yuri G.

, p. 87 - 90 (1998)

Starting from RfH (1) [Rf = 1,3,5-tris(trifluoromethyl)phenyl] RfNH2 (6) is obtained in a four-step synthesis. The amine 6 reacts with chlorotrimethylsilane in the presence of DBU (1,8-diazabicyclo(5,4,0)undec-7

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