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53171-52-1

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53171-52-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53171-52-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,1,7 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 53171-52:
(7*5)+(6*3)+(5*1)+(4*7)+(3*1)+(2*5)+(1*2)=101
101 % 10 = 1
So 53171-52-1 is a valid CAS Registry Number.

53171-52-1Relevant articles and documents

Photoinduced Vinylcyclopropane-Cyclopentene Rearrangement: A Methodology for Chiral Bicycloheptenes. Formal Syntheses of (+/-)-Grandisol and Naturally Occurring (-)-Δ9(12)-Capnellene and its Antipode

Sonawane, Harikisan R.,Naik, Vishwaniyant G.,Bellur, Nanjundiah S.,Shah, Virendra G.,Purohit, Pramod C.,et al.

, p. 8259 - 8276 (2007/10/02)

The problem of achieving reaction selectivity in cis-alkyl vinylcyclopropanes in favour of their rearrangement to cyclopentenes, obviating the competing low energy process of the (homo)sigmatropic hydrogen shift, is addressed.It has been demonstrated that the readily available bicycloheptenes derived from (+)-Δ3-carene (1), upon photosensitized irradiation, are conveniently transformed into chiral cis-bicyclo heptenes.The synthetic potential of this strategy has been demonstrated in realization of efficient formal syntheses of the important insect sex pheromone (+/-)-grandisol (2) and both the enantiomers of Δ9(12)-capnellene (3) from readily available 1, a major component of Indian turpentine oil.

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