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134287-56-2

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134287-56-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134287-56-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,2,8 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 134287-56:
(8*1)+(7*3)+(6*4)+(5*2)+(4*8)+(3*7)+(2*5)+(1*6)=132
132 % 10 = 2
So 134287-56-2 is a valid CAS Registry Number.

134287-56-2Downstream Products

134287-56-2Relevant articles and documents

Regiochemistry and Stereochemistry of Intramolecular Photocycloaddition of Carbon-Carbon Double Bonds to Cyclohexenones

Becker, D.,Nagler, M.,Sahali, Y.,Haddad, N.

, p. 4537 - 4543 (2007/10/02)

The intramolecular photocycloaddition mechanism of alkenes tethered by a three-methylene chain to cyclohexenones has been studied.It was found that the reversion from a 1,4-diradical intermediate to starting material is slow relative to the rate of photoadduct formation.Only "straight" closure was observed in the systems studied.For compounds 1-3 and 5, the assumption that the first bond is formed between the β-carbon of the enone and C-4' leading to a 1,4-diradical is supported.For the formation of compounds 6-11, possible mechanisms are discussed.

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