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169616-10-8

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169616-10-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169616-10-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,6,1 and 6 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 169616-10:
(8*1)+(7*6)+(6*9)+(5*6)+(4*1)+(3*6)+(2*1)+(1*0)=158
158 % 10 = 8
So 169616-10-8 is a valid CAS Registry Number.

169616-10-8Downstream Products

169616-10-8Relevant articles and documents

The first liquid-crystalline, expanded porphyrins

Sessler, Jonathan L.,Callaway, Wyeth,Dudek, Stephen P.,Date, Richard W.,Lynch, Vincent,Bruce, Duncan W.

, p. 2422 - 2423 (2003)

Aliphatic derivatives of hydrazinophyrin, a new type of tetrapyrrolic macrocycle prepared by the condensation of 2,5-diformylpyrroles with hydrazine, exhibit liquid crystalline properties as judged from polarising optical microscopy; these hydrazinophyrin

3,4-Dialkoxypyrroles and 2,3,7,8,12,13,17,18-octaalkoxyporphyrins

Merz,Schropp,Dotterl

, p. 795 - 800 (2007/10/02)

A five-step general synthesis of 3,4-dialkoxypyrroles 7c-f is described starting with the condensation of dimethyl N-benzyliminodiacetate (1 b) and diethyl oxalate to give dimethyl 1-benzyl-3,4-dihydroxypyrrole-2,5-dicarboxylate (2b), which is bis-O-alkylated to the corresponding 3,4-diethers 3c-g. Pyrrole N-benzyl cleavage followed by ester hydrolysis and decarboxylation leads to 7c-f in 10-50% overall yield. Pyrroles 7c-f react with formaldehyde or benzaldehydes to give meso-H- (8a-d) or meso-tetraaryloctaalkoxyporphyrins 9a-g in moderate yields.

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