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1643330-62-4

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1643330-62-4 Usage

Uses

5-Chloropentanamide Apixaban is an impurity of Apixaban (503612-47-3 #CAS), which is a potent, direct, selective, and orally active inhibitor of coagulation factor Xa. It is a potential new oral coagulant that may be useful prevention of venous thromboembolism in total hip, knee replacement orthopedic surgery and stroke in treatment of patient with venous thromboembolic disorder or with atrial fibrillation.

Check Digit Verification of cas no

The CAS Registry Mumber 1643330-62-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,3,3 and 0 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1643330-62:
(9*1)+(8*6)+(7*4)+(6*3)+(5*3)+(4*3)+(3*0)+(2*6)+(1*2)=144
144 % 10 = 4
So 1643330-62-4 is a valid CAS Registry Number.

1643330-62-4Downstream Products

1643330-62-4Relevant articles and documents

Preparation method of apixaban intermediate suitable for industrial production

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, (2021/08/19)

The invention discloses a synthesis method of an apixaban intermediate suitable for industrial production. The method comprises the following steps: carrying out phase-transfer catalytic amidation reaction on paranitroaniline and 5-chlorovaleryl chloride in an organic phase and water phase two-phase system under an inorganic weakly alkaline condition to obtain an APM01 solution, and adding a sodium hydroxide water solution, and cyclizing in a pot to obtain an APM02 solution; directly carrying out alpha-reactive hydrogen dichlorination on an APM02 organic solution and phosphorus pentachloride after simple acid pickling, liquid separation and drying to obtain an APM03 solution; carrying out condensation-elimination reaction on the APM03 solution and excessive morpholine after simple acid pickling and liquid separation, and carrying out simple crystallization and purification treatment to separate out an APM04 solid, and reducing the APM04 into APM05 by sodium sulfide; and carrying out amidation-cyclization two-step one-pot reaction on the APM05 and 5-chlorovaleryl chloride to prepare a key intermediate APM07. According to the method, the synthesis efficiency of the apixaban intermediate is improved, the reaction is mild, and dangerous NaH and other expensive reagents are not used, so that the production cost is saved, the operation is simple, and the method is suitable for industrial popularization.

A pyridine derivative

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, (2016/10/09)

The present invention relates to the field of pharmaceutical chemistry, specifically to a class of compounds containing lactam and derivative thereof, and especially to a pyridine derivative as shown in general formula (I), preparation method and the use thereof as a Factor Xa inhibitor. The present invention further relates to the medical use of the compound and derivative thereof in preparation of anticoagulant drugs, particularly to the use in preparation of drugs for preventing or treating thrombosis or embolism.

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