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159782-26-0

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159782-26-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159782-26-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,7,8 and 2 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 159782-26:
(8*1)+(7*5)+(6*9)+(5*7)+(4*8)+(3*2)+(2*2)+(1*6)=180
180 % 10 = 0
So 159782-26-0 is a valid CAS Registry Number.

159782-26-0Downstream Products

159782-26-0Relevant articles and documents

Preparation methods of anti-inflammatory agent roflumilast for inhibiting PDE4 enzymatic activity and intermediate of roflumilast

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, (2018/06/21)

The invention discloses preparation methods of an anti-inflammatory agent roflumilast for inhibiting the PDE4 enzymatic activity and an intermediate of the roflumilast. A chemical name of the anti-inflammatory agent roflumilast for inhibiting the PDE4 enzymatic activity is 3-(cyclopropyl methoxy)-N-(3,3-dichloropyridine-4-yl)-4-(difluoromethoxy) benzamide, the chemical formula of the roflumilast is C17H14C12F2N2O3, and the structural formula of the roflumilast is described as follow: (the structural formula is shown in the description). The preparation methods are concise in preparation technological process, available in raw material, simple in synthetic condition and high in yield and purity of a product, is environmentally friendly, is beneficial to realizing industrialization, lowers the production cost and is suitable for mass production; and the searched novel preparation methods of the roflumilast and the intermediate thereof have great significance on economical technology of the roflumilast.

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