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146838-14-4

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146838-14-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 146838-14-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,6,8,3 and 8 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 146838-14:
(8*1)+(7*4)+(6*6)+(5*8)+(4*3)+(3*8)+(2*1)+(1*4)=154
154 % 10 = 4
So 146838-14-4 is a valid CAS Registry Number.

146838-14-4Downstream Products

146838-14-4Relevant articles and documents

A thermodynamic study on phthalide-type dyes in aqueous alcohol solutions

Kim, Jae-Uk,Yoo, Jeong-Yeol,Kim, Jong-Gyu

, p. 1980 - 1984 (2015/08/18)

Phthalide-type dyes in aqueous variable alcohol solution were studied by UV-vis absorption spectroscopy. In this study, 7-[4-(diethylamino)-2-ethoxyphenyl]-7-(1-ethyl-2-methyl-1H-indol-3-yl)furo[3,4-b]pyridin-5(7H)-one ("Blue-63") was used. Generally, a blue shift is observed from dyes in higher-carbon-number-alcohol solvents. The results indicated the dye equilibrium constant in aqueous alcohol solutions. The equilibrium constant (K), Gibbs energy change (ΔG), enthalpy change (ΔH), and entropy change (ΔS) of the dye, depending on temperature change, were also calculated using UV absorbance.

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