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93487-69-5

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93487-69-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93487-69-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,4,8 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 93487-69:
(7*9)+(6*3)+(5*4)+(4*8)+(3*7)+(2*6)+(1*9)=175
175 % 10 = 5
So 93487-69-5 is a valid CAS Registry Number.

93487-69-5Relevant articles and documents

Synthesis of some New Tetra-aryl Porphyrins for Studies in Solar Energy Conversion. Part 2. Asymmetric Porphyrins

Milgrom, Lionel R.

, p. 1483 - 1487 (2007/10/02)

The synthesis and characterisation of some asymmetrical meso-substituted porphyrins, for studies in solar energy conversion, are described.Isomeric porphyrins (5) and (6) could be cleanly separated and distinguished by the number of 13C n.m.r. resonances for the pyrrole α-carbon atoms.Similarly, 13C and 1H n.m.r. spectrometry was used to characterise a porphyrin with n-pentadecyl and benzoquinone meso-substituents, using the number of pyrrole α-carbon and β-hydrogen resonances.Thin films of porphyrin (11) coated onto glass slides fluoresced, indicating little or no concentration quenching in the coat.

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