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Diphenyl-4-D1, also known as 1,1'-biphenyl-4-yl-4,4,5,5-d4, is a deuterated analog of diphenyl, a chemical compound consisting of two phenyl rings connected by a single bond. This stable isotope-labeled compound is primarily used as an internal standard in various analytical techniques, such as gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS), to improve the accuracy and precision of the analysis. The deuterium atoms in Diphenyl-4-D1 help in distinguishing it from its non-deuterated counterpart, allowing for more reliable quantification and identification of target compounds in complex samples.

4819-98-1

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4819-98-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4819-98-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,1 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4819-98:
(6*4)+(5*8)+(4*1)+(3*9)+(2*9)+(1*8)=121
121 % 10 = 1
So 4819-98-1 is a valid CAS Registry Number.

4819-98-1Downstream Products

4819-98-1Relevant academic research and scientific papers

Reductive Denitration of Nitroarenes

Kashihara, Myuto,Yadav, M. Ramu,Nakao, Yoshiaki

supporting information, p. 1655 - 1658 (2018/03/23)

The Pd-catalyzed reductive denitration of nitroarenes has been achieved via a direct cleavage of the C-NO2 bonds. The catalytic conditions reported exhibit a broad substrate scope and good functional-group compatibility. Notably, the use of inexpensive propan-2-ol as a mild reductant suppresses the competitive formation of anilines, which are normally formed by other conventional reductions. Mechanistic studies have revealed that alcohols serve as efficient hydride donors in this reaction, possibly through β-hydride elimination from palladium alkoxides.

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