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  

Tamsulosin

Application

Tamsulosin

CAS No.

122-84-9

Structure

Intermediates

4-Methoxy phenylacetone


Application

Tamsulosin

CAS No.

3259-03-8

Structure

Intermediates

2-(2-Ethoxyphenoxy)bromide ethane


Application

Tamsulosin

Structure

Intermediates

2-(2-Ethoxyphenoxy)ethylamine hydrochloride


Application

Tamsulosin

CAS No.

112101-81-2

Structure

Intermediates

R-(-)-5-(2-Amino-propyl)-2-methoxy-benzenesulfonamide


Application

Tamsulosin

CAS No.

116091-63-5

Structure

Intermediates

5-(2-Aminopropyl)-2-methoxybenzene sulphonamide


Application

Tamsulosin

CAS No.

6781-17-5

Intermediates

2-(2-Ethoxyphenoxy) ethamine


Application

Tamsulosin

CAS No.

3259-03-8

Intermediates

2-(2-Ethoxyphenoxy) ethyl bromide


Application

Tamsulosin

CAS No.

116091-63-5

Intermediates

5-Acetonyl-2-methoxybenzene sulfonamide


Application

Tamsulosin

CAS No.

112101-81-2

Intermediates

5-[(2R)-2-Aminopropyl]-2-methoxy benzene sulfonamide


Application

Tamsulosin

CAS No.

58993-79-6

Intermediates

R-(-)-2-(P-methoxyphenyl)-1-methy ethamine


Application

Tamsulosin

CAS No.

112244-38-9

Intermediates

5-[2-Aminopropyl]-2-methoxy benzene sulfonamide


 
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