6938-73-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6938-73-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,3 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6938-73:
(6*6)+(5*9)+(4*3)+(3*8)+(2*7)+(1*3)=134
134 % 10 = 4
So 6938-73-4 is a valid CAS Registry Number.
InChI:InChI=1/C21H16ClN3O4/c1-28-17-12-6-14(7-13-17)21(27)29-25-16-10-8-15(9-11-16)23-24-20(26)18-4-2-3-5-19(18)22/h2-13,25H,1H3/b24-23+
6938-73-4Relevant articles and documents
Regioselective electrophilic trifluoromethylation of substituted anilines and derivatives in superacid
Debarge, Sébastien,Violeau, Bruno,Bendaoud, Nohair,Jouannetaud, Marie-Paule,Jacquesy, Jean-Claude
, p. 1747 - 1750 (2007/10/03)
In a one pot procedure, treatment of chloro or methyl substituted acetanilides in HF/SbF5/CCl4 followed by addition of HF/pyridine yields trifluoromethyl derivatives with high regioselectivity.