Taizhou Volsen Chemical Co., Ltd.
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Contract Manufacturing

(Total 182 Products)
Rare Customized Project (E)-7-hydroxy-5-(1H-pyrrol-2-yl)-1H-benzo[e][1,4]diazepin-2(3H)-one

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(E)-7-hydroxy-5-(1H-pyrrol-2-yl)-1H-benzo[e][1,4]diazepin-2(3H)-one Thera. Category: Organic compound Cas No.: Synonym:(E)-7-hydroxy-5-(1H-pyrrol-2-yl)-1H-benzo[e][1,4]diazepin-2(3H)-one Molecular Formula: Molecular Weight: Assay: ≥98.% Appearance:...
Anti-ED Drugs Avanafil CAS Number 330784-47-9

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Avanafil CAS number is 330784-47-9, developed by Japan's Tanabe Mitsubishi Pharmaceuticals Co., Ltd. and VIVUS Corporation. In April 2012, the FDA approved the marketing of avanafil tablets for the treatment of male erectile dysfunction (ED). The...
Nutritional Supplement Ferric Citrate CAS 2338-05-8

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Ferric citrate monohydrate CAS Number is 2338-05-8, also known as ferric citrate, is a chemical product that has been used for many years. It is a structurally indeterminate complex. According to the literature, the method for synthesizing Ferric...
Ferric Carboxymaltose CAS Number 9007-72-1

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Ferric Carboxymaltose CAS number is 9007-72-1, which is developed by Swiss Vifor, first listed in Germany in 2007, listed in the UK in May of the following year, the trade name Ferinject, for oral iron is invalid or can not use oral iron Treatment...
Novel Melatonin Receptor Agonist Ramelteon CAS 196597-26-9

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Ramelteon CAS 196597-26-9 is an important product in our company which is a melatonin MT1/MT2 receptor (MEL-1A-R/MEL-1B-R) agonist. Ramelteon CAS NO 196597-26-9 is widely used an orally active hypnotic agents. Clinical trails show Ramelteon...
Ethyl 3-(dimethylamino)acrylate Purity ≥99% CAS Number 924-99-2
Ethyl 3-(Dimethylamino)acrylate CAS number is 924-99-2, which is the intermediate of the moxifloxacin. The synthesis method of Ethyl 3-(Dimethylamino)acrylate is as follows: (1) by DMF and ethoxy acetylene as raw materials by addition reaction, and...
Compound Encyclopedia 2,4-Dichloro-5-fluorobenzoyl Chloride CAS 86393-34-2
2,4-Dichloro-5-fluorobenzoyl chloride CAS number is 86393-34-2, It is the preparation of antipsychotic special effects trifluoroacridinol, trifluoroamyl benzene, penfluridol and broad-spectrum antibiotics such as the main raw materials of the third...
Natural Bioflavonoid Quercetin Dihydrate Cas number 6151-25-3

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Quercetin dihydrate cas number 6151-25-3 which is a natural bioflavonoid. Both skin photoaging and ultraviolet (UV) induction can cause excessive production of reactive oxygen species (ROS) in the skin, resulting in damage or apoptosis of skin...
Flavanonol Dihydroquercetin (Taxifolin) CAS 480-18-2

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Dihydroquercetin CAS number is 480-18-2, which is one of the active ingredients of natural flavonoids, belongs to the vitamin P group, is a dihydroflavonol compound with many natural active ingredients, and it has strong resistance and Oxidation...
Novel Proteasome Inhibitor Bortezomib CAS Number 179324-69-7

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Bortezomib (BTZ),cas number is 179324-69-7, a novel proteasome inhibitor, has been used in the treatment of multiple myeloma. It affects the tumor microenvironment, increases the degree of endoplasmic reticulum stress and induces tumor cell...
Anti-HIV Drug Bictegravir Sodium GS-9883; GS 9883; GS9883; GS-9883-01 CAS Number 1807988-02-8

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Bictegravir sodium CAS Number is 1807988-02-8. The FDA approved the Bictegravir sodium combination as a new anti-HIV drug on February 12, 2018. Some professionals expect Bictegravir sodium combination CAS Number 1807988-02-8 has the sales value more...
Bictegravir (GS-9883;GS9883;GS 9883) CAS Number 1611493-60-7

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Bictegravir CAS number is 1611493-60-7, developed code is GS-9883, is a new class of integrase inhibitors. Unlike the previously developed integrase inhibitors, Bictegravir only needs to be used once a day without the synergist cobicistat. In the...
41051-15-4,Methyl 4-methoxyacetoacetate Used for Making Dolutegravir

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Methyl 4-methoxyacetoacetate cas number 41051-15-4 which is a colorless transparent liquid with an aromatic odor. It is an important pharmaceutical intermediate compound. It is mainly used in the synthesis of the new anti-AIDS drug Dolutegravir....
Pharmaceutical Synthesis Of (1R,3S)-3-Aminocyclopentanol CAS 1110772-05-8

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Bictegravir intermediate named (1R,3S)-3-Aminocyclopentanol CAS number is 1110772-05-8. His synthesis process is as follows: (1) Under nitrogen protection, 600 mL of tetrahydrofuran is added to the reaction flask, the stirring device is turned on,...
(1R,3S)-3-Aminocyclopentanol hydrochloride CAS number 1279032-31-3

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(1R,3S)-3-Aminocyclopentanol hydrochloride CAS number is 1279032-31-3, which is a key starting material for Bictegravir. Some literatures have reported on his synthesis process, first using tert-butyl (1S, 3R)-3-acetylcyclopentylcarbamate as raw...
High Purity Ixazomib(MLN-2238; MLN 2238; MLN2238) CAS 1072833-77-2

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Ixazomib cas number is 1072833-77-2,also named MLN 2238,which is a nitrogen-capped dipeptide leucine boronic acid that inhibits the chymotrypsin (β5) hydrolysis site of the 20S proteasome, with an IC50 of 3.4 nM and a Ki value of 0.93 nM. At higher...
1-Methylpyrrolidin-3-Yl Cyclopentylphenylglycolate CAS Number 13118-11-1

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1-methylpyrrolidin-3-yl cyclopentylphenylglycolate CAS number 13118-11-1 is used to make Glycopyrrolate Bromide, molecular formula C18H25NO3, molecular weight 303.396, appearance of yellow oily liquid. The purity of our product is more than 90%, and...
α-Cyclopentylmandelic Acid CAS Number 427-49-6

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Alpha-Cyclopentylmandelic acid is an intermediate of Glycopyrrolate Bromide CAS number is 427-49-6. Molecular formula C13H16O3, molecular weight 220.26, appearance of almost white crystalline powder, odourless. The alpha-Cyclopentylmandelic acid of...
5-Bromoisobenzofuran-1(3H)-one CAS 64169-34-2

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We are professional supplier of 5-Bromophthalide CAS 64169-34-2 that is an important intermediate for FG-4592. FG-4592 is a HIF α prolyl hydroxylase inhibitor that is approved for the treatment of anemia. 5-Bromophthalide CAS NO 64169-34-2 is white...
2-Cyano-N-[4-(Trifluoromethyl)Phenyl]Acetamide CAS 24522-30-3

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The specific preparation process Teriflunomide intermediate of 2-cyano-N-[4-(trifluoromethyl)phenyl]acetamide cas 24522-30-3 was as follows: 205 g of sodium azide, 400 g of 4-trifluoromethylbenzoic acid, 52.4 g of triphenylphosphine, and 28 g of...
Anticholinergic Drug Glycopyrrolate CAS Number 596-51-0

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Glycopyrrolate CAS Number is 596-51-0, the appearance of white crystalline powder, odorless, bitter taste, Soluble in water, methanol or ethanol, almost insoluble in chloroform or ether. Cannot be mixed with alkaline drugs. It is a quaternary...
Carfilzomib Intermediate Cas 247068-85-5

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The key intermediate of Carfilzomib CAS number is 247068-85-5, It is very difficult to synthesize and it is an important intermediate for Carfilzomib. There are major four ways on synthesis: The first one is obtained by using L-leucine as a starting...
4-Bromo-2-Hydroxybenzoic Acid CAS 1666-28-0

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4-Bromo-2-hydroxybenzoic acid is also known as 4-bromosalicylic acid, CAS number is 1666-28-0, 4-Bromo-2-hydroxybenzoic acid is conventionally produced by oxidation and acidification. The general procedure is to mix the p-bromotoluene, water and...
Irreversible Proteasome Inhibitor Carfilzomib 868540-17-4

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Carfilzomib cas number is 868540-17-4,which is an intravenously administered tetrapeptide epoxy ketone backbone proteasome inhibitor that selectively and irreversibly binds to the N-terminus of the threonine active site of the 20S proteasome,...
Home > Products > Contract Manufacturing

China Contract Manufacturing Suppliers

We could undertake custom development,custom manufacturing for various organic chemicals,special chemicals intermediates and raw materials, ranging from g, kg to 100-ton-level clinical and mass production products.Volsen not only owns more than 10 years commercial production experiences of common products, but also owns a professional custom synthesis team, it makes up for developing issue of production team,production experiences issue of research team. realized the most efficient combination of production and R&D. We can conduct process optimization to the technology provided by our customers, as well as carry out new process development for product provided by them.

The target of Custom synthesis

1. Provide customers with integrated services throughout the life cycle of the product in areas such as agricultural chemicals, pharmaceuticals chemicals.

2. Production enlargement, Continuous Process development

3. Continuous quality improvement, cost reduction and efficiency optimization.


The Advantage of Custom synthesis

1.High efficient, rich experience and full of innovative professional R & D team.

2.Advanced research and development equipment, flexible pilot plant,improved production facilities

3.Professional project management personnel, a sound project management system.

4.The tailored customized production help customers to reduce the cost of money and time.


Mode of Custom synthesis
1.Conduct process optimization to the technology provided by our customers

2. Carry out new process development for product provided by them.


The process of customized business:

1) Complete the project analysis and respond to customers in three days after received a single customer consultation;

2) Two parties confirm the quality specification as the final quality standards.

3) R&D department starts to research, synthesis.Give weekly report to customer about project progress.

4) Customer confirms the sample, later,we provided details of production schedule.

5) Two parties signed the contract.

6) After finished, QA department make a analysis.

7) Customer acceptance of products by qualified finished.


Confidential Commitment

Keep Strictly confidential of client projects is one of our business criteria, we will put the confidentiality on the height of strategic development. We conduct strictly confidentiality measures and workflows.If necessary, may enter into a confidentiality contract. We are willing to work closely with customers at home and abroad to develop the production of new chemical products.No matter what the issue.We are ready to serve you faithfully.




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