93444-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93444-71-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,4,4 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 93444-71:
(7*9)+(6*3)+(5*4)+(4*4)+(3*4)+(2*7)+(1*1)=144
144 % 10 = 4
So 93444-71-4 is a valid CAS Registry Number.
93444-71-4Relevant articles and documents
A NOVEL SYNTHESIS OF CYCLOHEPTADIBENZOXAZINES AND 14HBENZOXAZINOCYCLOHEPTABENZOXAZINES
Nozoe, Tetsuo,Okai, Harue,Wakabayashi, Hidetsugu,Ishikawa, Sumio
, p. 1145 - 1148 (2007/10/02)
The title compounds, namely, the chiral acetals and their positional isomers were efficiently prepared by heating 6-bromocycloheptabenzoxazines and the substituted o-aminophenols at 120 deg C in acetic acid.
