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57256-92-5

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57256-92-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57256-92-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,5 and 6 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57256-92:
(7*5)+(6*7)+(5*2)+(4*5)+(3*6)+(2*9)+(1*2)=145
145 % 10 = 5
So 57256-92-5 is a valid CAS Registry Number.

57256-92-5Relevant articles and documents

Method for preparing atomoxetine hydrochloride

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Paragraph 0009, (2017/05/20)

The invention belongs to the technical field of medicines, and particularly relates to a method for preparing atomoxetine hydrochloride which is a medicine for treating attention deficit hyperactivity disorder. The atomoxetine hydrochloride is made of commercially easily available intermediates 3-methylamino-1-propiophenone hydrochloride. The method includes carrying out reduction, salt decomposition, resolving, substitution and salt forming to obtain the atomoxetine hydrochloride. The method has the advantages that technologies for preparing the atomoxetine hydrochloride are simple and stable and are easy and convenient to implement, high in yield and applicable to industrial production, and sufficient raw materials can be provided for research and development of medicines.

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