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115120-25-7

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115120-25-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 115120-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,5,1,2 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 115120-25:
(8*1)+(7*1)+(6*5)+(5*1)+(4*2)+(3*0)+(2*2)+(1*5)=67
67 % 10 = 7
So 115120-25-7 is a valid CAS Registry Number.

115120-25-7Downstream Products

115120-25-7Relevant articles and documents

Diastereoselectivity in the Diels-Alder Reactions of Thioaldehydes

Vedejs, E.,Stults, J. S.,Wilde, R. G.

, p. 5452 - 5460 (2007/10/02)

The Diels-Alder reaction of thioaldehydes with cyclopentadiene occurs with a preference for the endo isomer.The highest selectivity is observed for thioaldehydes RCHS where R is a bulky group such as tert-butyl or isopropyl.Thioaldehydes having α-alkoxy, acetoxy, or siloxy substituents also react with useful endo selectivity.Secondary orbital overlap is a small factor in these reactions since α-oxo thioaldehydes react with relatively low endo selectivity.Steric effects are primarily responsible for the endo preferences observed.The Diels-Alder reactions of chiral α-oxygen substituted thioaldehydes also occur with useful thioformyl face selectivity.A Cornforth transition state 5 is most likely for the selectivity observed for α-alkoxy or acetoxy thioaldehydes, but the α-hydroxy analogue 23 reacts with the opposite facial preference.The highest face selectivity is obtained with the acetonide of thioglyceraldehyde, generated by photolysis of the phenacyl sulfide 15b.

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