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690957-61-0

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690957-61-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 690957-61-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,9,5 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 690957-61:
(8*6)+(7*9)+(6*0)+(5*9)+(4*5)+(3*7)+(2*6)+(1*1)=210
210 % 10 = 0
So 690957-61-0 is a valid CAS Registry Number.

690957-61-0Upstream product

690957-61-0Downstream Products

690957-61-0Relevant articles and documents

Microwave-assisted synthesis and reverse saturable absorption of phthalocyanines and porphyrins

Liu, Mark O.,Tai, Chia-Hon,Wang, Wei-Ya,Chen, Jun-Rong,Hu, Andrew Teh,Wei, Tai-Huei

, p. 1078 - 1084 (2007/10/03)

Soluble phthalocyanines, including tetrakis(2,9,16,23-cumylphenoxy) copper phthalocyanines (CuPc(β-CP)4), tetrakis(1,8,15, 22-cumylphenoxy) copper phthalocyanines (CuPc(α-CP)4) as well as tetrakis(2,9,16,23- tert -butyl) copper phthalocyanines (CuPc(β-t-butyl)4), and porphyrins (5,10,15,20-tetrakis (4- tert -butylphenyl)porphyrins; M(TBP), M=H2, Zn, Cu, Mg, InCl, AlCl) have been quickly synthesized by microwave irradiation. Furthermore, their reverse saturable absorption have also been investigated by dissolving them in solvent or incorporating them in polymer-silica hybrid material with a sol-gel process with polyvinyl butyral and tetraethyl orthosilicate as precursors. A new method for the preparation process of phthalocyanines and porphyrins in the solids has been successfully used.

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