Contract Manufacturing

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.





High Purity Etoricoxib Intermediates CAS 90536-66-6 On Sale
High Purity Etoricoxib Intermediates CAS 90536-66-6 On Sale
Hot Sale Etoricoxib Intermediates CAS 90536-66-6
Hot Sale Etoricoxib Intermediates CAS 90536-66-6
Fulvestrant Intermediates-6(N-2) 875573-69-6
Fulvestrant Intermediates-6(N-2) 875573-69-6
4-Nitrobenzyl Bromide 99% CAS 100-11-8
4-Nitrobenzyl Bromide 99% CAS 100-11-8
Dabrafenib Mesylate(GSK2118436)1195768-06-9
Dabrafenib Mesylate(GSK2118436)1195768-06-9
(2R)-3-Bromo-2-Hydroxy-2-Methylpropanoic Acid CAS 261904-39-6
(2R)-3-Bromo-2-Hydroxy-2-Methylpropanoic Acid CAS 261904-39-6
Beta3-Adrenoceptor Mirabegron Intermediate 521284-21-9
Beta3-Adrenoceptor Mirabegron Intermediate 521284-21-9
High Purity Methyl 6-methylnicotinate CAS 5470-70-2
High Purity Methyl 6-methylnicotinate CAS 5470-70-2
Etoricoxib, Intermediate Methyl 6-methylnicotinate, LABOTEST-BB LT00847843 CAS 5470-70-2
Etoricoxib, Intermediate Methyl 6-methylnicotinate, LABOTEST-BB LT00847843 CAS 5470-70-2
DL-Alpha-(Methylaminomethyl)benzyl Alcohol CAS 6589-55-5
DL-Alpha-(Methylaminomethyl)benzyl Alcohol CAS 6589-55-5
2-(methylamino)-1-phenyl-ethano CAS 6589-55-5
2-(methylamino)-1-phenyl-ethano CAS 6589-55-5
High Purity N,N'-Bis-(2-Chloroethyl)urea CAS 2214-72-4
High Purity N,N'-Bis-(2-Chloroethyl)urea CAS 2214-72-4
3-(BENZYLOXY)-2-METHYL-4H-PYRAN-4-ONE CAS 61049-69-2
3-(BENZYLOXY)-2-METHYL-4H-PYRAN-4-ONE CAS 61049-69-2
Novel Melatonin Receptor Agonist Ramelteon CAS 196597-26-9
Novel Melatonin Receptor Agonist Ramelteon CAS 196597-26-9
Anti-Insomnia Drug Ramelteon CAS 196597-26-9
Anti-Insomnia Drug Ramelteon CAS 196597-26-9
Triaminopyridine Derivative Salt Flupirtine Maleate CAS 75507-68-5
Triaminopyridine Derivative Salt Flupirtine Maleate CAS 75507-68-5
MFCD00941415 Non-Opiate Analgesic Flupirtine Maleate HPLC≥99% CAS 75507-68-5
MFCD00941415 Non-Opiate Analgesic Flupirtine Maleate HPLC≥99% CAS 75507-68-5
1,2,6,7-Tetrahydro-8H-Indeno[5,4-b]Furan-8-One CAS 196597-78-1
1,2,6,7-Tetrahydro-8H-Indeno[5,4-b]Furan-8-One CAS 196597-78-1
Synthetic Route of Ramelteon Intermediates CAS 196597-78-1
Synthetic Route of Ramelteon Intermediates CAS 196597-78-1
(E)-(1,6,7,8-Tetrahydro-2H-indeno[5,4-b]furan-8-ylidene)acetonitrile CAS 196597-79-2
(E)-(1,6,7,8-Tetrahydro-2H-indeno[5,4-b]furan-8-ylidene)acetonitrile CAS 196597-79-2
Ramelteon Intermediates CAS 196597-79-2
Ramelteon Intermediates CAS 196597-79-2
2-(1,6,7,8-Tetrahydro-2H-Indeno[5,4-b]furan-8-yl)EthylaMine Hydrochloride CAS 1053239-39-6
2-(1,6,7,8-Tetrahydro-2H-Indeno[5,4-b]furan-8-yl)EthylaMine Hydrochloride CAS 1053239-39-6
Ramelteon Intermediates Melatonin Receptor Agonist CAS 1053239-39-6
Ramelteon Intermediates Melatonin Receptor Agonist CAS 1053239-39-6
((5-Thiazolyl)Methyl)-(4-Nitrophenyl)carbonate Hydrochloride CAS 154212-59-6
((5-Thiazolyl)Methyl)-(4-Nitrophenyl)carbonate Hydrochloride CAS 154212-59-6

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