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 

Atorvastatin

Application

Atorvastatin Calcium

Structure

Intermediates

ATS 5-( R )-4-cyano-3-hydroxybutyric acid ethyl ester


Application

Atorvastatin Calcium

Structure

Intermediates

Ats-8 (4R,Cis)-1,1-dimethylethyl-cyanomethyl-2,2-dimethyl-

1,3-dioxane-4-acetate


Application

Atorvastatin, Cephalosporins

CAS No.

2033-24-1

Structure

Intermediates

Cycl-isopropylidene malonate ( Meldrum's Acid )


Application

Atorvastatin

CAS No.

134523-00-5

Structure

Formula :

C 33 H 34 FN 2 O 5 กค3H 2 O


 

 
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