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303007-68-3

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303007-68-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 303007-68-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,3,0,0 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 303007-68:
(8*3)+(7*0)+(6*3)+(5*0)+(4*0)+(3*7)+(2*6)+(1*8)=83
83 % 10 = 3
So 303007-68-3 is a valid CAS Registry Number.

303007-68-3Relevant articles and documents

Helical chirality induction of expanded porphyrin analogues

Setsune, Jun-Ichiro

, p. 1151 - 1163 (2013/05/22)

Expanded porphyrin analogues with unique figure-eight conformation were prepared by way of useful pyrrole intermediates such as bis(azafulvene)s and 2-borylpyrrole. Supramolecular chirogenesis of cyclooctapyrrole O1 with 32π-cycloconjugation was successfu

A facile and efficient method for the preparation of new meso-arylbisdipyrrins

Broring

, p. 1291 - 1294 (2007/10/03)

The phosphorous oxytrichloride mediated condensation of diaroylbipyrroles 5a-e with the α-unsubstituted pyrrole 2 was found to produce diarylbisdipyrrins 6a-e in good to excellent yields. The method is compatible with a series of functional groups on the aryl substituents. This paper reports preparative and spectroscopic details for five new diarylbisdipyrrins as well as those for one meso-unsubstituted alkylbisdipyrrin.

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