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203580-74-9

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203580-74-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203580-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,5,8 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 203580-74:
(8*2)+(7*0)+(6*3)+(5*5)+(4*8)+(3*0)+(2*7)+(1*4)=109
109 % 10 = 9
So 203580-74-9 is a valid CAS Registry Number.

203580-74-9Relevant articles and documents

Fused imidazole compounds with indoleamine 2,3-dioxygenase inhibition activity

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Paragraph 0452-0455; 0656-0659, (2018/07/10)

The invention relates to fused imidazole compounds, and a preparation method and application thereof. The structure of the compounds is shown in a general formula I, wherein the definitions of each group are as described in the specification. The compounds are capable of selectively inhibiting indoleamine 2,3-dioxygenase (IDO). The compounds provided by the invention can be used as IDO inhibitorsfor the treatment and/or prevention of diseases with the pathological characteristics of IDO mediated tryptophan metabolism pathways, such as cancer, eye diseases, autoimmune diseases, psychological disorders, depression, anxiety and other diseases.

Nonlinear optical side-chain polymers post-functionalized with high-β chromophores exhibiting large electro-optic property

Piao, Xianqing,Zhang, Xianmin,Mori, Yuichi,Koishi, Masayuki,Nakaya, Akinari,Inoue, Shinichiro,Aoki, Isao,Otomo, Akira,Yokoyama, Shiyoshi

, p. 47 - 54 (2011/10/02)

Electro-optic side-chain polymers have been synthesized by the post-functionalization of methacrylate isocyanate polymers with novel phenyl vinylene thiophene vinylene bridge (FTC) nonlinear optical chromophores. For this application, FTC-based chromophores were modified in their electronic donor structure, exhibiting much larger molecular hyperpolarizabilities compared with the benchmark FTC. Of these new chromophores, absorption spectra, hyper-Rayleigh scattering experiment, and thermal analysis were carried out to confirm availability as effective nonlinear optical units for electro-optic side-chain polymers. The electro-optic coefficients (r33) of obtained polymers were investigated in the process of in situ poling by monitoring the temperature, current flow, poling field, and electro-optic signal. Compared with the nonsubstituted analogue, benxyloxy modified FTC chromophore significantly achieved higher nonlinear optical property, exhibiting molecular hyperpolarizability at 1.9 μm of 4600 × 10-30 esu and an r33 value of 150 pm/V at the wavelength of 1.31 μm. Synthesized electro-optic polymers showed high glass transition temperature (Tg), so that the temporal stability examination exhibited >78% of the electro-optic intensity remaining at 85 °C over 500 h. Copyright

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