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653565-06-1

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653565-06-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 653565-06-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,3,5,6 and 5 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 653565-06:
(8*6)+(7*5)+(6*3)+(5*5)+(4*6)+(3*5)+(2*0)+(1*6)=171
171 % 10 = 1
So 653565-06-1 is a valid CAS Registry Number.

653565-06-1Relevant articles and documents

A Simple Synthesis of Pyridine Aminophosphinic Acids and Pyridine Aminophosphine Oxides. The Unusual Cleavage of Pyridylmethyl-(N-benzylamino)-phenylphosphinic Acids and Phosphine Oxides in Acidic Solutions

Boduszek, Bogdan

, p. 4087 - 4094 (2003)

Pyridine aminophosphinic acids were synthesized in reaction, of N-(benzyl)-pyridylmethylimines with ethyl phenylphosphinate, in the presence of bromotrimethylsilane. Pyridine aminophosphine oxides were obtained in excellent yields by treatment of the corresponding imines with diphenylphosphine oxide. Among these compounds, the 2-pyridyl and 4-pyridyl derivatives were subject to a simple cleavage in aqueous mineral acid solutions. Products of the cleavages were N-(pyridylmethyl)benzylamines and phenylphosphonic (or diphenylphosphinic) acid, respectively.

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