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56431-03-9

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56431-03-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56431-03-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,4,3 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 56431-03:
(7*5)+(6*6)+(5*4)+(4*3)+(3*1)+(2*0)+(1*3)=109
109 % 10 = 9
So 56431-03-9 is a valid CAS Registry Number.

56431-03-9Relevant articles and documents

Photo-induced phosphorus radical involved semipinacol rearrangement reaction: Highly synthesis of γ-oxo-phosphonates

Wang, Chunhai,Huang, Xiaoling,Liu, Xueting,Gao, Suqian,Zhao, Bin,Yang, Shangdong

, p. 677 - 680 (2019/08/27)

Hydroxyphosphoric acids display the unique biological activities, and they have some attractive prospects as clinical drug moleculars. Herein, a new approach for the synthesis of γ-oxo-phosphonates (the precursor of hydroxyphosphoric acid) has been established through the semipinacol rearrangement tactic involved the photo-induced phosphorus radical process. Most important, this transformation is avoid of the external oxidants, and occurs very well under the sunlight irradiation, meanwhile the γ-oxo-phosphonate was easily derivatized to obtain γ-hydroxyphosphoric acid, thus highlights the synthesis value of this method.

Alpha-substituted benzhydrol derivatives

-

, (2008/06/13)

The invention relates to new α-substituted benzhydrols and pharmaceutically acceptable acid addition salts or quaternary ammonium salts thereof with enzyme promoting or inhibiting effects;

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