Cas 91867-99-1,3a,6-dihydro-2,4,6-triphenyl-1,3,3a,5-tetraazabenz<e>azulene

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Check Digit Verification of cas no

The CAS Registry Mumber 91867-99-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,6 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91867-99:
(7*9)+(6*1)+(5*8)+(4*6)+(3*7)+(2*9)+(1*9)=181
181 % 10 = 1
So 91867-99-1 is a valid CAS Registry Number.

91867-99-1Upstream product

91666-82-9 2,3,6,7-tetraphenyl<1,2,3>triazolo<2,1-a><1,2,3>triazole

91867-99-1Downstream Products

91867-99-1Relevant academic research and scientific papers

PHOTOISOMERISATION OF 2,3,6,7-TETRAPHENYL-1,2,3-TRIAZOLO-1,2,3-TRIAZOLE

Kopecky, Jan,Smejkal, Jaroslav,Turecek, Frantisek,Jirkovsky, Jaromir,Fojtik, Anton,Hanus, Vladimir

, p. 2613 - 2616 (1984)

Irradiation of the title compound brings about consecutive photoisomerisations via derivatives of 1,2,3-triazolyl-2H-azirine, 1,2,3-triazolo-1,2,4-triazole and 1,2,4-triazolyl-2H-azirine, leading finally to a dehydrotetraazabenzazulene.

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