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31269-75-7

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31269-75-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31269-75-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,2,6 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 31269-75:
(7*3)+(6*1)+(5*2)+(4*6)+(3*9)+(2*7)+(1*5)=107
107 % 10 = 7
So 31269-75-7 is a valid CAS Registry Number.

31269-75-7Relevant articles and documents

Tetraquinanes via [4 + 4] photocycloaddition/transannular ring closure

Chen, Peiling,Carroll, Patrick J.,Sieburth, Scott McN.

, p. 4510 - 4512 (2010)

Intramolecular [4 + 4] photocycloaddition of a furan and a cyclopentane-annulated 2-pyridone yields a cyclooctadiene product with four new stereogenic centers. Transannular ring closure produces the 5 - 5 - 5 - 5 fused ring system of the crinipellins, inc

Synthesis of the (+)-Enantiomer of Taonianone, a Furanoid Diterpene from Brown Algae

Huckestein, Martina,Kreiser, Wolfgang,Rueschenbaum, Volker

, p. 445 - 447 (1987)

The constitution and absolute configuration of the furanoditerpene taonianone (1) has been established by synthesis starting from (-)-carveol (2).

Novel reaction pathways for 2-pyridone [4+4] photoadducts

Chen, Peiling,Chen, Yanping,Carroll, Patrick J.,Sieburth, Scott McN.

, p. 3367 - 3370 (2006)

Transannular ring closure of a pyridone-furan [4+4] photoadduct has been evaluated in a model system. A combination of nitrogen substitution and an isopropyl group gave full control of the four new stereogenic centers. Chlorination transformed the 1,5-cyc

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