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123341-39-9

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123341-39-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123341-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,3,4 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 123341-39:
(8*1)+(7*2)+(6*3)+(5*3)+(4*4)+(3*1)+(2*3)+(1*9)=89
89 % 10 = 9
So 123341-39-9 is a valid CAS Registry Number.

123341-39-9Upstream product

123341-39-9Downstream Products

123341-39-9Relevant academic research and scientific papers

Synthesis of lead porphyrin derivatives by a solid state reaction

Zhang, Yin-Han,Liu, Yun-Ping,Fan, Shao-Hua

, p. 279 - 288 (1999)

A solid state reaction was successfully applied for the first time to synthesize complexes of lead(II) with the porphyrin derivatives meso-tetra(4-hydroxyphenyl)porphyrin, meso-tetra(4-methoxyphenyl)porphyrin and meso-tetra(4-nitrophenyl)porphyrin. The influence of the composition and structure of the porphyrin, temperature, initiator and mixing degree on the reactions was studied. IR, UV absorption and fluorescence spectra show the compositions and structures of the complexes are the same as those synthesized in solution.

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