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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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Marketing list

Cardiovascular & its advanced intermediates
 (including R&D products)

Atorvastatin & ATS-5 ATS-8 ATS -9 M 4 L 1
ATS-5 : (R)-4-cyano-3-hydroxybutyric acid ethyl ester
ATS-8 : (4R,Cis)-1,1-dimethylethyl-cyanomethyl-2,2- dimethyl-1,3-dioxane-4-acetate

CAS NO.: 134523-00-5
CAS NO.: 141942-85-0
CAS NO.: 125971-94-0

Clopidogrel
D-(+)-methyl-alpha-(2-thienylethamino)(2-chlorophenyl)acetate hydrochloride

CAS NO: 141109-19-5
Chitosan CAS NO: 9012-76-4
Edaravone CAS NO:89-25-8
Fondaparinux CAS NO.: 114870-03-0

Fluvastatin & F2,F4
F4 : Tert- butyl( E)-3,5-dihydroxy-7-[3'-(4"-fluorophenyl)-1'- methylethyl-indol-2'-yl] hept-6-enoate

CAS NO: 59333-67-4

Isosorbide 5-mononitrate CAS NO:16051-77-7
Isosorbide mononitrate CAS NO:87-33-2
Lovastatin CAS NO:75330-75-5
Mildronate
3-(2,2,2-Trimethylhydrazine) methylpropionate bromide
CAS NO: 76144-81-5
CAS NO: 106966-65-0
Mevastatin CAS NO:73573-88-3
Moxonidine hydrochloride CAS NO:75438-58-3
Olmesartan
DMDO-CL
DMDO

CAS NO: 80841-78-7
CAS NO: 37830-90-3
Prasugrel CAS NO: 150322-43-3
Prasugrel intermediate  
Pravastatin Sodium CAS NO:81131-70-6

Rosuvastatin Calcium & Z7,Z8,R3
Z-7 : 4-(4- Fluorophenyl)-6-isopropyl-2-[ (N- methyl-N-methylsulfonyl)amino]pyrimidine-5-yl-methonol

CAS NO:147098-20-2
CAS NO.: 147118-36-3

 

Ramipril & intermediate
(1S, 3S, 5S)-2-azabicyclo [3,3,0] octane-3-carborylic acid benzyl ester hydrochloride

CAS NO:87333-19-5

Lisinopril
N2-[(1S)-ethoxycarbonyl-3-phenylpropyl]-N6-Trifluoroacetyl-L-Lysine

CAS NO:83915-83-7
CAS NO: 116169-90-5

L-Carnitine;Vitamin Bt CAS NO:541-15-1

Enalapril
N2-[(S)-(+)-1-(Ethoxy carbonyl)-3-phenylpropyl]-L-Alanine ECPPA

CAS NO:76095-16-4
CAS NO.: 82717-96-2

Benazepril
T ert-butyl-(s)-(3-amino-2-oxo-2,3,4,5-tetrahydobenzo[b]azepine-1yl) Acetate

CAS NO:86541-74-4
CAS NO.: 109010-60-8

Perindopril
(2S,3As,7As)-octahydroindole-2-carboxylic acid
N-[(S)-1-carbethoxybutyl]-(S)-alanine

CAS NO:82834-16-0
CAS No. 80875-98-5
CAS No. 8 2834-12-6

Quinapril
S-1,2,3,4 ¨C tetrahydro-3-isoquinolinecarboxylic acid

CAS NO:85441-61-8

 

Valsartan
N-[[(2-cyano(1.1-biphenyl)-4-yl)methyl]methyl ester]-L- valine.hydrochloride

CAS NO:137862-53-4

Telmisartan & Int.
4-[ 2'-n-propyl-1, 4'-dimethyl-(2,6-dibenzimidazole)-1'-yl] methylene (1, 1'-biphenyl)-2-methyl formate

CAS NO:144701-48-4
CAS NO.: 144702-26-1

Candesartan Cilexetil
N-( Triphenylmethyl) ¨C 5-( 4'-bromomethylbiphenyl-2yl) tetrazole

CAS NO:145040-37-5
CAS NO.: 124750-51-2

Losartan Potassium
N-(Triphenylmethyl)-5-(4'-Bromomethylbiphenyl-2-Yl-) Tetrazole
2-N-butyl-4-(5,5)-chloro-5-hydroxymethanol imidazole

CAS NO:12475-99-8
CAS NO.: 124750-51-2

Olmesartan & int
4-chloromethyl-5-methyl-1,3-Dioxol-2-one (DMDO-CL)

CAS NO:144689-63-4
 CAS NO.: 80841-78-7

Irbesartan
2n-Butyl-4(5)-chloro-1H-Imidazole-5(4)-Oarboxaldehyde

CAS NO:13 8402-11-6
CAS NO.: 83857-96-9

Doxazosin
 N-(1,4-Benzodioxan-2-Yl-Carbonyl)Piperazine

CAS NO:77883-43-3
CAS NO.: 70918-00-2

Clopidogrel
2-Thiophene Ethanol
(+)-Methyl-alpha-(2-Thienylethamino) (2-Chlorophenyl) AcetateHydrochloride
N-[(2-Thienyl)ethyl]-(2s)-2-chloro-phenyl Glycine methyl ester

CAS NO:113665-84-2
CAS NO.: 5402-55-1
CAS NO.: 141109-19-5
CAS NO.: 5680-79-5

Cilostazole
5-(4-Chlorobutyl)-1-Cyclohexyl-1H-Tetrazole
6-Hydroxy-3,4-dihydro-2(1H)-quinolinone

CAS NO:73963-72-1
 CAS NO.: 73963-42-5
CAS NO.: 54197-66-9

Cilnidipine
Methylethyl-3-Nitro Benzylidene Acetoacetate

CAS NO:132203-70-4

Loratadine & int

 

Carvedilol & int
4-Hydroxy-9H-carbazole
Epoxy propoxy carbazol

CAS NO:7 2956-09-3
CAS NO.: 54989-33-2

Cilostazole
5-(4-Chlorobutyl)-1-Cyclohexyl-1H-Tetrazole
6-Hydroxy-3,4-dihydro-2(1H)-quinolinone

CAS NO:73963-72-1
CAS NO.: 73963-42-5
CAS NO.: 54197-66-9

Ezitimibe & int
(s)-4-phenyl-2-Oxazolidione
3-[5-(4-fluorophenyl)-1,5-dioxopentyl]-4-phenyl-(4S)-2-oxazolidinone

CAS NO:163222-33-1
CAS NO.: 99395-88-7
CAS NO:189028-93-1

Anti- cancer & its advanced intermediates
(including R&D products)

Gemcitabine &int
2-Deoxy-2,2-difluoro-D-ribofuranose-3,5-dibenzoate
2-Deoxy-2,2-difluoro-D-ribofuranose-3,5-di benzoate-1-methane sulfonate

CAS NO: 95058-81-4

CAS NO: 143157-22-6

Bicalutamide &int
4-cyano-3-trifluoro methyl aniline
4-Fluorothiophenol
N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)thio]-2-hydroxy-2-methylpropionamide

CAS NO:90357-06-5


CAS NO.: 90356-78-8

Docetaxel CAS NO.: 114977-28-5
Docetaxel intermediate  

Anastrazole & int
2-[3-(Cyano-dimethyl-methyl)-5-methyl-phenyl]-2-methyl-propionitrile

CAS NO: 120511-73-1
CAS NO:120511-72-0

Granisetron & int

 

Palonosetron HCl & int
S-(-)-3-Aminoquinuclidine 2HCl
N-(1-azabicyalo[2,2,2]oct-3S-yl)-1,2,3,4-tetrahydronaphthalen-1S-ylcarboxamine

CAS NO: 119904-90-4

Bisoprolol & int

 

Letrozole & int
4-[a-(4-cyanophenyl)-chloromethyl]-benzonitrile

CAS NO: 112809-51-5
CAS NO:112809-57-1

Ibandronate Sodium
3-(N-methylpentylamino)propionic acid hydrochloride

 

Pemetrexed disodium CAS NO.: 150399-23-8
Pemetrexed disodium intermediate  
Anti-cancer & its advanced intermediates
Bicalutamide
N-[4-cyano-3-(trifluoromethyl)phenyl]-2-methyl-oxiranecarboxamide

CAS NO: 90357-51-0
Gemcitabine
2-deoxy-2,2-difluoro-d- erythro-pentafuranous-1-ulose-3,5-dibenzoate

CAS NO: 122111-01-7
Mycophenolate mofetil CAS NO: 115007-34-6

Anti-depressant & its advanced intermediates
(including R&D products)

Aripiprazole
3,4-dihydro-7-Hydroxy-2(1H)-Quinolinone
N-(2,3-dichlorophenyl) Piperazine Hydrochloride

CAS NO:129722-12-9
CAS NO.: 22246-18-0
CAS NO.: 41202-77-1

Carbamazepine

 

Ciclopirox Olamine

CAS NO:29342-05-0

Clozapine

 

Donepezil
 5,6-Dimethoxy-1-Indanone
N-Benzyl Piperidine-4-Carboxaldehyde

CAS NO:12 0014-06-4
CAS NO.: 2107-69-9

Duloxetine
(S)-N,N-dimethyl-gamma-(1-naphthalenyloxy)-2-thiophenepropanamine oxalate

CAS NO:136434-34-9

Gabapentin & int CDA CAM
1,1-Cyclohexane Diacetic Acid Monoamide ( CAM )
1,1-Cyclohexane Diacetic Anhydride( CAA )

CAS NO:60142-96-3
CAS NO: 99189-60-3

Levetiracetam

 

Mirtazapine
1-(3-hydroxymethylpyridin-2-yl) -4-methyl-2-phenylpiperazine

CAS NO:61337-89-1
Milnacipran hydrochloride CAS NO:101152-94-7

Naratriptan
2-(1-Methyl-4-Piperidinyl)-Acetaldehyde
N-Methyl-1H-Indole-5-Ethane Sulfonamide
N-Methyl-4-Piperidinol

CAS NO:121679-13-8


CAS No. 106-52-5

olanzapine
4-Amino-2-Methyl-10H-Thieno[2,3-b][1,5]Benxodiazepine Hcl

CAS NO:132539-06-1
CAS No. 138564-60-0

Oxcarbazepine

 
Paliperidone CAS No. 144598-75-4

Paroxetine

CAS NO:6 1869-08-7

Pregabalin

CAS NO:148553-50-8

Rivastigmine
N-Ethyl-N-Methylcarbamoyl Chloride

CAS NO:12 3441-03-2
CAS NO.: 42252-34-6

Rizatriptan
4-(1H-1,2,4-Triazole-1-Yl Methyl) Aniline Hcl

CAS NO:145202-66-0

Risperidone
3-(2-Chloroethyl)-6,7,8,9-Tetrahydro-2-Methyl-4H-Pyridin [1,2-a]-pyrimidine ¨C4-one
6-Fluoro-3-(4-piperidinyl) ¨C 1,2-benzisoxazole

CAS NO:10 6266-06-2
CAS NO.: 41078-70-0
CAS NO.: 84163-77-9

Sumatriptan Succinate
N-Methyl-4-Nitro Benzene Methane Sulfonamide
4-Hydrazine phenyl ¨C N-methyl methane sulfonamide

CAS NO:103628-46-2

Topiramate

 

Tegaserod
N-Amino-N-Pentylguanidine Hydroiodide

CAS NO:189188-57-6

Venlafaxine
2-(1-Hydroxy Cyclohexyl)-2-(4-Methoxy Phenyl) Acetonitrile

CAS NO:99300-78-4

Ziprasidone
5-Chloroacetyl-6-Chloro-1,3-Dihydro-2-H Indole-2-One

CAS NO:138982-67-9

Zolmitriptan
 (S)-4-(4-Aminobenzyl)-2-Oxazolidinone
4-nitro-L-phenylalanino

CAS NO:139264-17-8
CAS No. 152305-23-2
CAS No. 949-99-5

ZOPICLONE
6-(5-chloropyrid-2yl)-5-hydroxy-7oxo-5,6-dihydro-pyrrolo-(3,4b)-pyrazine

CAS NO:43200-80-2

anti-diabetes drug & its advanced intermediates
 (including R&D products)

Acarbose

CAS NO:56180-94-0

Miglitol CAS NO:72432-03-2

Voglibose
Valiolamine

CAS NO:83480-29-9

Tamsulosin
R-(-)-5-(2-Amino-propyl)-2-methoxy-benzenesulfonamide
2-(2-Ethoxyphenoxy)bromide ethane

CAS NO:106133-20-4
CAS No. 112101-81-2
CAS No. 3259-03-8

 

glimepiride   

 

Repaglinide

 

Rimonabant

 

Miglitol

 

steroid drug & its advanced intermediates
 (including R&D products)

Cyproterone Acetate
1, 2a -Methylene-6-didehydro -17a -acetoxy Progesterone
1-Chloromethyl-6-chloro-6-dehydro -17a -acetoxy Progesterone

CAS NO:427-51-0

Mifepristone

CAS NO:84371-65-3

Finasteride

CAS NO:98319-26-7

Eplerenone
11alpha-Hydroxy canrenone

CAS NO:107724-20-9
CAS NO:192569-17-8

Finastride

CAS NO.:  98319-26-7

Finastride intermediate  

Methylprednisolone

CAS NO:83-43-2

Fluticasone propionate

CAS NO:80474-14-2

Conjugated Estrogens

 

Exemestane

CAS NO:107868-30-4

Fluoxymesterone

CAS NO:76-43-7

Fluorogestone acetate

CAS NO:337-03-1

Budesonide
16-Alpha-Hydroxy Prednisolone

CAS NO:51333-22-3

Drospirenon

CAS NO:67392-87-4

Triamcinolone Acetonide

CAS NO:76-25-5

Megestrol Acetate

CAS NO:595-33-5

Deflazacort

CAS NO:14484-47-0

Estrone

CAS NO:53-16-7

Dydrogesterone

CAS NO:152-62-5

Medrogestone

CAS NO:977-79-7

Fluocinolone Acetonide

CAS NO:67-73-2

Hydrocortisone

CAS NO:50-23-7

Hydrocortisone Acetate

CAS NO:50-03-3

Antibiotics and their intermediates
(Including R&D products)

Ciprofloxacin Hcl
Q-acid

CAS NO: 86393-32-0
CAS NO: 86393-33-1

CPP
2,3-cyclopenteno pyridine

CAS NO: 533-37-9

CHP
2,3-cyclohexano pyridine

CAS NO: 10500-57-9

EHATA
Ethyl(Z)-2-(2-Aminothiazole-4-yl)-2-Methoxyimino Acetate

CAS NO: 64485-88-7

Gatifloxacin

CAS NO: 180200-66-2

Marbofloxacin CAS NO.: 115550-35-1

MMT
5-Mercapto-1-methyl tetrazole

CAS NO: 13183-79-4

MMTA
2-(2-Mercapto-4-Methyl-1,3-Thiazole-5-yl) Acetic Acid

CAS NO: 34272-64-5

MICA ACID
(Z)-2-(tert-methoxycarbonyl methoxyimino)-2-(2-aminothiazol-4-yl) acetic acid

CAS NO: 80554-17-8

MICA ESTER
S-2-benzothiazolyl (Z)-2-(2-aminothiazol-4-yl)-2-methoxycarbonylmethoxyiminothio acetate

CAS NO: 246035-38-1

MAEM
2-Mercaptobenzothiazoyl (Z)-2-(2-Aminothiazole-4-yl)-2-methoxyimino acetate

CAS NO: 80756-85-0

TTZ
1,2,5,6-Tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazine

CAS NO: 58909-39-0

Ofloxacin
Olfoxacin Acid

CAS NO: 82419-36-1
CAS NO: 82419-35-0

Levofloxacin
Levofloxacin Acid
2,3,4,5-tetrafluoro benzoic acid

CAS NO: 100986-85-4
CAS NO: 100986-89-8
CAS NO: 1201-31-6

SMIA
Sin-Methoxyimino Furanyl Acetic Acid Ammonium Salt

CAS NO: 97148-89-5

TAA
1,2,3,4-Tetrazolyl-1- Acetic Acid

CAS NO: 21732-17-2

 

Aciclovir

CAS NO: 59277-89-3

Famciclovir

CAS NO: 104227-87-4

Ganciclovir

CAS NO: 82410-32-0

Valaciclovir

CAS NO: 124832-26-4

Meropenem & 4-AA 4-BMA MAP

 

Penipenem 4-nitrobenzyl-1-((S)-3-mercaptopyrrolidin-1-yl)ethylidenecarbamate

 

Farop enem & int

CAS NO: 122547-49-3

Biapenem
6,7-dihydro-6-mercapto-5H-pyrazolo[1,2-a][1,2,4]triazolium chloride or
6,7-dihydro-6-mercapto-5H-pyrazolo[1,2-a][1,2,4]triazol-4-ium,chloride

CAS NO: 120410-24-4

CAS NO: 153851-71-9

Ertapenem

 

Imipenem

CAS NO: 74431-23-5

1H-1,2,3-Triazole

CAS NO: 288-36-8

Tetramethyl Guanidine

CAS NO: 80-70-6

Clarithromycin

CAS NO: 8 1103-11-9

Azitromycin

CAS NO: 8 3905-01-5

Amorolfine

CAS NO: 106614-68-0

Terbinafine

CAS NO: 78628-80-5

Ciclopirox Olamine

CAS NO: 29342-05-0

Antivirus and their intermediates
ACYCLOVIR SODIUM CAS NO:69657-51-8
Arbidol Hcl CAS NO:131707-23-8
Rifabutin CAS NO:72559-06-9
Vitamin
Folic acid CAS NO:59-30-3
Riboflavin CAS NO:83-88-5
Riboflavin 5 Phosphate CAS NO:6184-17-4
Thiamine HCl CAS NO:1967-3-8
Thiamine Nitrate CAS NO:532-43-4
Vitamin D2 CAS NO:50-14-6
Vitamin D3 CAS NO:67-97-0

Other item and their intermediates
(Including R&D products)

1-METHYL-2-PYRROLIDINONE, N-METHYLPYRROLIDINONE CAS NO:872-50-4
Actidione (Cycloheximide) CAS NO:66-81-9

Abacavir

 

Amorolfine

 
Alverine Citrate
p-Toluenesulfonamide (PTSA)
p-Toluenesulfonyl chloride (PTSC)
Ortho Toluene Sulphonamide (OTSA)
CAS NO:5560-59-8
CAS NO:70-55-3
CAS NO:98-59-9
CAS NO:88-19-7

Atovaquone

 
Calcipotriene CAS NO:112965-21-6

Calcipotriol

 
Catalyzer of Duloxetine, Montelukast sodium, Ezetimibe
(R)-2-methyl-cbs-oxazaborolidine solution in toluene
(S)-2-methyl-cbs-oxazaborolidine solution in toluene
(-)-DIP-Chloride solution in heptane
(+)-DIP-Chloride solution in heptane

CAS NO:112022-83-0
CAS NO:112022-81-8
CAS NO:85116-37-6
CAS NO:112246-73-8
Conjugated estrogen CAS NO:12126-59-9

Co enzyme Q10 M

 

Doxofylline

 

Donepezil

 

Diethylstilbestrol

 

Glucosamine Sulfate K + ; Na + ; HCL

 
Leviteracetam
L-2-aminobutanamide hydrochloride

CAS NO:7682-20-4

Isotretinoin

 

Iohexol

 
   

Etodolac

CAS NO:41340-25-4

Efavirienz Int. : Cyclopropyl acetylene
                     Cyclopropyl methylketone
                     2-trifluoroacetyl ¨C4-chlorophenylamine HCL

 

Modafinil

 

Montelucastan

 

Moxifloxacin

 

Sildenafil Citrate

 
(S)-2-Aminobutyramide HCl CAS NO:7682-20-4

Sucralose

 

Valaciclovir Hcl

 

Verapamil

 

R&D list

Naratriptan

2-(1-Methyl-4-Piperidinyl)-Acetaldehyde
N-Methyl-1H-Indole-5-Ethane Sulfonamide
N-Methyl-4-Piperidinol

Rivastigmine

N-Ethyl-N-Methyl carbamoyl Chloride
Di-P-Tolyl Tartaric Acid
Palonosetron
Bicalutamide

 

 
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