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70185-71-6

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70185-71-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70185-71-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,1,8 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70185-71:
(7*7)+(6*0)+(5*1)+(4*8)+(3*5)+(2*7)+(1*1)=116
116 % 10 = 6
So 70185-71-6 is a valid CAS Registry Number.

70185-71-6Downstream Products

70185-71-6Relevant articles and documents

Both-faces Hindered Porphyrins. Part 1. Synthesis and Characterization of Basket-handle Porphyrins and Their Iron Complexes

Momenteau, Michel,Mispelter, Joel,Loock, Bernard,Bisagni, Emile

, p. 189 - 196 (2007/10/02)

The synthesis of the 'both-faces' hindered porphyrins using two different methods is reported.These so-called 'basket-handle' porphyrins (BHP) are derived from 5,10,15,20-tetraphenylporphyrin in which two opposite phenyl groups are bridged by alkylene or arylene-p-bisalkylene chains.In addition to the desired compounds , two other isomers were obtained .These were separated by t.l.c. on silica gel and then individually characterized.The structural assignment of the three isomers in the five series studied was based on the 1H n.m.r. spectra of the free bases and of their iron(II) complexes.

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