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119770-78-4

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119770-78-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119770-78-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,7,7 and 0 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 119770-78:
(8*1)+(7*1)+(6*9)+(5*7)+(4*7)+(3*0)+(2*7)+(1*8)=154
154 % 10 = 4
So 119770-78-4 is a valid CAS Registry Number.

119770-78-4Relevant articles and documents

Functionalized meso-Arylporphyrins, Precursors for the Synthesis of Oligoporphyrinyls

Hammel, Dirk,Kautz, Christian,Muellen, Klaus

, p. 1353 - 1356 (2007/10/02)

Lithiation and subsequent formylation of bromo-substituted tetraarylporphyrins 3a-d, prepared under Adler-Rothemund conditions, afford a mixture of the porphyrinylbenzaldehydes 4a-d and the corresponding dialdehydes (cis and trans isomer) 7a/7d and 8a/8d, which may be isolated by column chromatography.The readily available porphyrins are suitable precursors for the synthesis of oligoporphyrinyl systems which is demonstrated for the case of the novel stilbene-linked diporphyrinyl 12.Alkyl substitution of the nonfunctionalized aryl groups brings about sufficient solubility of the porphyrins in organic solvents.

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