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72039-82-8

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72039-82-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72039-82-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,0,3 and 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 72039-82:
(7*7)+(6*2)+(5*0)+(4*3)+(3*9)+(2*8)+(1*2)=118
118 % 10 = 8
So 72039-82-8 is a valid CAS Registry Number.

72039-82-8Relevant articles and documents

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Ireland,R.E. et al.

, p. 2247 - 2250 (1970)

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Total Synthesis of (-)-Chromodorolide B by a Computationally-Guided Radical Addition/Cyclization/Fragmentation Cascade

Tao, Daniel J.,Slutskyy, Yuriy,Muuronen, Mikko,Le, Alexander,Kohler, Philipp,Overman, Larry E.

supporting information, p. 3091 - 3102 (2018/03/08)

The first total synthesis of a chromodorolide marine diterpenoid is described. The core of the diterpenoid is constructed by a bimolecular radical addition/cyclization/fragmentation cascade that unites two complex fragments and forms two C-C bonds and four contiguous stereogenic centers of (-)-chromodorolide B in a single step. This coupling step is initiated by visible-light photocatalytic fragmentation of a redox-active ester, which can be accomplished in the presence of an iridium or a less-precious electron-rich dicyanobenzene photocatalyst, and employs equimolar amounts of the two addends. Computational studies guided the development of this central step of the synthesis and provide insight into the origin of the observed stereoselectivity.

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