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302897-96-7

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302897-96-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 302897-96-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,2,8,9 and 7 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 302897-96:
(8*3)+(7*0)+(6*2)+(5*8)+(4*9)+(3*7)+(2*9)+(1*6)=157
157 % 10 = 7
So 302897-96-7 is a valid CAS Registry Number.

302897-96-7Downstream Products

302897-96-7Relevant articles and documents

Synthesis, crystal structure and photoluminescence of 3-(1-benzotriazole)-4-methyl-coumarin

Yu, Tianzhi,Zhao, Yuling,Fan, Duowang

, p. 18 - 22 (2006)

A novel coumarin derivative containing an electron-transporting moiety (benzotriazole), 3-(1-benzotriazole)-4-methyl-coumarin (BMC), was synthesized from starting substances, i.e. benzotriazole and 2-hydroxyacetophenone. The compound structure was verified by FT-IR, 1H NMR, element analysis and single crystal X-ray crystallography. Crystallographic data reveal a dihedral angle of 108° between the coumarin and benzotriazole rings, which is attributed to the spatial hindrance of a 4-positioned methyl group. The fluorescence and UV-vis absorption of BMC were discussed. The compound exhibits a strong UV emission peak at 385 nm under 360 nm excitation. The molecular structure of BMC was optimized using density functional theory (DFT) at B3LYP/6-31G(d) level, showing that the optimized geometric parameters are in good agreement with experimental data. In addition, the HOMO and LUMO levels of BMC were deduced.

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