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91136-60-6

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91136-60-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91136-60-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,3 and 6 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91136-60:
(7*9)+(6*1)+(5*1)+(4*3)+(3*6)+(2*6)+(1*0)=116
116 % 10 = 6
So 91136-60-6 is a valid CAS Registry Number.

91136-60-6Relevant articles and documents

Solvent-induced E/Z(C=N)-isomerization of imines of some hydroxy-substituted formylcoumarins

Traven',Ivanov,Panov,Safronova,Chibisova

experimental part, p. 1989 - 1995 (2009/12/23)

Aromatic imines, namely, 5-formyl-6-hydroxy-4-methyl- and 8-formyl-7-hydroxy-4-methylcoumarin derivatives, have been synthesized. A dependence of their spectral characteristics (1H NMR spectra, electronic absorption spectra) from the solvent (DMSO, CHCl3, DMF, acetonitrile, MeOH) has been studied. The solvatochromic effects observed for a number of imines, first of all, for 7-hydroxy-4-methyl-8-(4'-nitrophenylimino) methyl-2H-1-benzopyran-2-one, were related to their E/Z-isomerization with respect to the C=N bond based on the quantum chemical calculations by the AM1, PM3, PPP CI methods.

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