About us |
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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
Application |
Anastrozole |
CAS No. |
1924-04-2 |
Intermediates |
1,3-bis[bromomethyl]-5-methylbenzene |
Application |
Anastrozole |
CAS No. |
120511-74-2 |
Intermediates |
5-methyl-1,3-diacetonitrilbezene |
Application |
Anastrozole |
CAS No. |
120511-72-0 |
Intermediates |
α,α,α ', α ', 5-pentamethyl-1,3benzenediacetonitrile |
Application |
Anastrozole |
CAS No. |
120511-84-4 |
Intermediates |
2,2-(5-bromomethyl-1,3-phenylene)-di(2-methylpropiononitrile) |
Application |
Anastrozole |
CAS No. |
120511-74-2 |
Intermediates |
3,5-Bis(cyanomethyl) toluene also known as (3-Cyanomethyl-5-methyl-phenyl)-acetonitrile |
Application |
Anastrozole |
CAS No. |
120511-72-0 |
Intermediates |
2-[3-(Cyano-dimethyl-methyl)-5-methyl-phenyl]-2-methyl-propionitrile |
Application |
Anastrozole |
CAS No. |
120511-73-1 |
Structure |

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