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31136-21-7

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31136-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31136-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,3 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 31136-21:
(7*3)+(6*1)+(5*1)+(4*3)+(3*6)+(2*2)+(1*1)=67
67 % 10 = 7
So 31136-21-7 is a valid CAS Registry Number.

31136-21-7Downstream Products

31136-21-7Relevant articles and documents

FROZEN-IN NON-EQUILIBRIUM ROTAMER MIXTURES IN 1,2-DIARYLETHYLENES OBTAINED BY LOW-TEMPERATURE IRRADIATION

Castel, Nelly,Fischer, Ernst

, p. 159 - 166 (1985)

trans-1,2-Di(2-naphthyl)-ethylene, formed in rigid media by UV irradiation of its cis isomer, comprises a mixture of three modifications, not in equilibrium with each other, that are tentatively assigned to the three possible rotamers.At somewhat lower viscosities, in the range 108-109 cP, equilibrium is established.Detection is by emission-spectroscopic methods.Three other related compounds showed only slight effects of the same kind.

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