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140411-01-4

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140411-01-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140411-01-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,4,1 and 1 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 140411-01:
(8*1)+(7*4)+(6*0)+(5*4)+(4*1)+(3*1)+(2*0)+(1*1)=64
64 % 10 = 4
So 140411-01-4 is a valid CAS Registry Number.

140411-01-4Downstream Products

140411-01-4Relevant articles and documents

Natural Tetrapyrrol Derivatives for the Photodynamic Therapy, 2. - Model Reactions for Direct C-C Linkages of Porphyrins

Risch, Nikolaus,Mackenbrock, Ursula

, p. 569 - 574 (2007/10/02)

Until now, there is a lack of information about the structure of the active components in the diagnosis and photodynamic therapy of cancer with hematoporphyrin derivatives (HPD).We describe the formation of HPD in terms of benzyl cation chemistry.Selective formation of the C-C-linked model compounds 4, 5 by reaction of protoporphyrin dimethyl ester (2) with electron-rich aromatic compounds as well as of 9-12, 15-17, obtained by reaction of the porphyrin dimethyl esters 2, 6, 7, and 8 with carbon electrophiles (preformed Mannich salts), results from this concept. K ey Words: Photodynamic therapy (PDT) / Porphyrins / Hematoporphyrin derivative (HPD) / Mannich bases / Benzyl cations

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