Hangzhou VIWA Co., Ltd.
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   About us

VIWA pharma division is a professional supplier of active pharmaceutical ingredients and intermediates. We are specialized in R&D and custom manufacturing. Supported by our highly qualified team of professor and technicians, we have rich experience on a wide range of chemical reactions and fermentation from multi gram scale to hundred tons scale according to customers' requirement.

Our main products are cardiovascular, anti-diabetes, anti-cancer, steroid, anti-HIV and their intermediates, especially on oncology products.

Moreover, we are quite strong at regulatory issues. Our products have been marketed in USA, Europe, Latin America, India, Vietnam, Turkey, etc.
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Product List  

Paroxetine

Application

Paroxetine

CAS No.

105812-81-5

Structure

Intermediates

(-)-Trans-4R-(4-Fluorophenyl)-3S-hydroxymethyl-N-methylpiperidine


Application

Paroxetine

CAS No.

317323-77-6

Structure

Intermediates

Trans-(-)-4-(4Fluorophenyl)-1-methyl-3-[(4-toluenesulfonylox)methyl]piperidine


Application

Paroxetine

CAS No.

110429-36-2

Structure

Intermediates

N-Methyl Paroxetine


Application

Paroxetine and anti-cancer drugs

CAS No.

533-31-3

Structure

Intermediates

Sesamol [ Synonyms ] : 3,4-Methylenedioxyphenol; 5-Hydroxy-1,3-benzodioxole

 
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