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119273-86-8

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119273-86-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119273-86-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,2,7 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 119273-86:
(8*1)+(7*1)+(6*9)+(5*2)+(4*7)+(3*3)+(2*8)+(1*6)=138
138 % 10 = 8
So 119273-86-8 is a valid CAS Registry Number.

119273-86-8Downstream Products

119273-86-8Relevant articles and documents

Photoaddition of Water and Alcohols to 3-Nitrostyrenes. Structure-Reactivity and Solvent Effects

Wan, Peter,Davis, Michael J.,Teo, Mary-Anne

, p. 1354 - 1359 (2007/10/02)

The photoadditions of water and several alcohols to the triplet excited states of 3-nitrostyrenes 1, 3-5, and 8 to give the corresponding anti-Markovnikov addition products are reported.Both 3- and 4-nitrostilbenes (6 and 7, respectively) do not undergo photoaddition on direct or sensitized irradiation in aqeous or alcohol solutions; only trans to cis photoisomerisation is observed.It is proposed that for the nitrostilbenes, efficient twisting of the alkene in the triplet excited state competes favorably with photoaddition.The efficient photoaddition of the water and methanol observed for 5-nitroindene (8)-the alkene moiety of which cannot attain an orthogonal ("twisted") state-is taken as additional evidence that these photoadditions probably occur via the planar triplet state and that twisting results in only deactivation to the ground state.The use of cosolvents (CH3CN and HCONH2) on several photoadditions is also reported.For example, use of CH3CN cosolvent in aqueous solution decreases the efficiency of photohydration in the parent 3-nitrostyrene (1) but is observed to enhance the efficiency of reaction (until about 40-70 mol percent CH3CN, depending on the substrate) for 3, 4, and 8.Quantum yields for photohydration and photoaddition of alcohols are reported for several systems.

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