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1,4-diphenylnaphtho[2,3-g]phthalazine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

42189-20-8

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42189-20-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42189-20-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,8 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 42189-20:
(7*4)+(6*2)+(5*1)+(4*8)+(3*9)+(2*2)+(1*0)=108
108 % 10 = 8
So 42189-20-8 is a valid CAS Registry Number.

42189-20-8Downstream Products

42189-20-8Relevant academic research and scientific papers

One-step synthesis of benzo[g]phthalazines and naphtho[2,3-g]phthalazines from benzo- or naphtho-oxabicyclic alkene

Kong, Kundi,Zhang, Jie,Zhao, Peng,Lu, Huali,Chen, Zhijun,Cao, Weiguo,Chen, Jie,Chen, Yali

, p. 6742 - 6746 (2017)

An efficient protocol for one-step synthesis of oxadisilole-fused benzo[g]phthalazines and naphtho[2,3-g]phthalazines by the Diels-Alder reactions and denitrogenation/deoxygenation aromatization reactions of benzo- or naphtho-oxabicyclic alkene with 3,6-d

Benzophthalazine or naphthophthalazine derivatives and synthetic method thereof

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Paragraph 0014, (2016/10/08)

The invention relates to benzophthalazine or naphthophthalazine derivatives and a synthetic method thereof. The derivatives have structures as shown in the specification, and R in the structures is selected from a methoxy group, a methyl group, hydrogen,

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