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21038-62-0

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21038-62-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21038-62-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,3 and 8 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21038-62:
(7*2)+(6*1)+(5*0)+(4*3)+(3*8)+(2*6)+(1*2)=70
70 % 10 = 0
So 21038-62-0 is a valid CAS Registry Number.

21038-62-0Relevant articles and documents

Revisitation of Formaldehyde Aniline Condensation. VII. 1,3,5-Triarylhexahydro-sym-triazines and 1,3,5,7-Tetraaryl-1,3,5,7-tetrazocines from Aromatic Amines and Paraformaldehyde

Giumanini, Angelo G.,Verardo, Giancarlo,Zangrando, Ennio,Lassiani, Lucia

, p. 1087 - 1103 (2007/10/02)

A product study of the reaction between a number of aromatic amines substituted with widely different groups and paraformaldehyde in inert solvents was performed and found to yield 1,3,5-triaryl-1,3,5-hexahydrotriazines, 1,3,5,7-tetraaryl-1,3,5,7-tetrazocines and formaminals.It was not possible to correlate the product outcomes with the actual structure of the amine substrate.The X-ray diffraction structural determination of 1,3,5-tri-(t-butylphenyl)- (1b) and 1,3,5-tri-(m-fluorophenyl)-1,3,5-hexahydrotriazine (1c) showed the diaxial arrangement of the N-substituents.

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