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879097-59-3

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879097-59-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 879097-59-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,9,0,9 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 879097-59:
(8*8)+(7*7)+(6*9)+(5*0)+(4*9)+(3*7)+(2*5)+(1*9)=243
243 % 10 = 3
So 879097-59-3 is a valid CAS Registry Number.

879097-59-3Relevant articles and documents

Preparation and purification method for triphenyl methyl olmesartan compound (I)

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Paragraph 0020; 0021; 0028; 0029, (2020/01/03)

The present invention provides a preparation and purification method for triphenyl methyl olmesartan. The method comprises the following steps: forming a triphenyl methyl olmesartan carboxylate reaction liquid by using ethyl 4-(2-hydroxy-2-propanyl)-2-pro

A process for the preparation of olmesartan

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Paragraph 0018; 0028-0029, (2018/02/04)

The invention relates to a method for preparing a medicine olmesartan medoxomil for treating hypertension, belongs to the field of medicines, and provides a method for preparing the olmesartan medoxomil with low material cost and mild reaction condition. The method comprises the following steps of: feeding two initial raw materials ( a compound 1 and a compound 2) according to a mole ratio of 1:1 during the process; adding the polyethylene glycol/N,N-dimethylacetamide composite catalyst to be completely reacted with the two initial raw materials so as to avoid a necessary impurity control process caused by excessive raw materials during classic reaction; and removing triphenylmethyl from a methanol/organic solvent mixed system to avoid participation of acid. Based on the improvement, the operation is greatly simplified, the cost is reduced, and the industrial production is facilitated.

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