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84196-42-9

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84196-42-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84196-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,1,9 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 84196-42:
(7*8)+(6*4)+(5*1)+(4*9)+(3*6)+(2*4)+(1*2)=149
149 % 10 = 9
So 84196-42-9 is a valid CAS Registry Number.

84196-42-9Downstream Products

84196-42-9Relevant articles and documents

EFFECT OF THE INCLUSION OF A CYCLIC FRAGMENT IN THE CHROMOPHORE ON THE PROPERTIES OF A SPIROPYRAN-MEROCYANINE SYSTEM

Gal'bershtam, M. A.,Sidorov, A. P.,Przhiyalgovskaya, N. M.,Strokach, Yu. P.,Barachevskii, V. A.,et. al.

, p. 923 - 928 (2007/10/02)

The corresponding merocyanines, which do not display a tendency to form spiropyran structures, are formed in the condensation of 1,3,3-trimethyl-2-methyleneindoline with 5-methyl-2-furoylacetaldehyde, 2-formylcyclohexanone, or 2-formyl-1-tetralone.Spiran compounds in which the spiropyran-merocyanine equilibrium is shifted markedly to favor the closed form are formed when 4a,9-dimethyl-2,3,4,4a-tetrahydrocarbazone - the cyclic analog of the Fischer base - is used in the reaction with salicylaldehydes and benzoylacetaldehydes.

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