1. GUANGZHOU TOSUN PHARMACEUTICAL LTD.
The Most Trusted & Valuable Supplier in Pharmaceutical
Jan. 2023
About Us Facilities & Services Featured Services Reference Standards APIs Reference Listed Drugs Impurity Other Products Contact
Contents

2. ▪ About Us ···········································································
▪ Facilities & Services ····························································
▪ Featured Services ·····························································
▪ Reference Standards ··························································
▪ APIs ···················································································
▪ Reference Listed Drugs ······················································
▪ Impurities ··········································································
▪ Other Products ··································································
▪ Contact ··············································································
Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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3. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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About Us
Guangzhou Tosun Pharmaceutical Ltd. was established in 1999. The headquarter is located in Guangzhou, China.
We have been the most trusted and valuable distributor of APIs, Reference Listed Drugs, and Impurity Standards for over 20 years. Over 90% of
Chinese manufacturers and CROs are our end users. What's more, we have established strategic alliance partnerships with hundreds of
pharmaceutical companies and organizations over the world and achieved a high reputation in the field of pharmaceuticals by providing high-
quality products and services.
We are looking for some potential API Impurities as stock, and we are also happy to help you promote unique and hot products in the Chinese
market. Our mission is to deliver high-quality products to all global customers according to their specific needs at competitive prices.
We are looking forward to a long-term business relationship with you and hope to hear from you soon.
Guangzhou Tosun Pharmaceutical Ltd. at a Glance
20+
Years Experience
200+
Local Employees
10,000+
Global Customers
20,000+
sq.ft. Laboratory & Office Space
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4. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Facilities & Services
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Guangzhou Tosun Pharmaceutical Limited
occupies over 20,000 sq.ft. of state-of-the-art
R&D laboraties with modern scientific
equipments, featuring Custom Synthesis
Laboratory, Analytical Testing Laboratory,
Formulation Research and Development
Laboratory, and Quality Assurance Department.
Equipment in synthesis research lab ranging from
UPLC, Preparative HPLC, High Vacuum
Distillation Unit, Lyophilizers to different types of
Reactors. This fully equipped lab allows rapid
development of scalable and robust process
utilizing advanced methodologies.

5. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Facilities & Services
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From our R&D Laboratory, we can offer the following services :
▪ CUSTOM SYNTHESIS OF CHEMICAL REFERENCE STANDARDS & API IMPURITIES
We can provide fast and reliable service for a custom synthesis of impurities, based on the structure of the impurity, name of the parent drug, required quantity, CAS No. (if
available).
▪ IMPURITY ISOLATION AND PURIFICATION
Isolation and Purification of Known and Unknown Impurities from milligram to gram scale.
▪ CERTIFIED IMPURITY STANDARDS
All products are supplied with certificates of analysis (COA). A standard certificate of analysis contains the following information: mass spectroscopy, purity test by either HPLC or
GC, additional characterization data if required.
Facility Tour

6. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Facilities & Services
Take a virtual tour of some of our Analytical Instrumentation and Specialized Equipment through the photo gallery.
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7. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Facilities & Services
Guangzhou Tosun Pharm has maintained a policy of regular reinvestment to keep our facility up-to-date and increase our capabilities to better
serve our customers' needs. Interested in visiting us? Contact us today to schedule a visit and find out how our highly-skilled R&D teams can
make your next project our latest success.
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8. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Featured Services
Registration services in Chinese market and sourcing services are also
one of our strongest specialities and the most important business.
Our success comes from:
▪ Our competitive pricing.
▪ Close relationship with china & global manufacturer.
▪ Our firm commitment to customer service.
▪ Excellent experience in this field.
▪ Strict quality control procedures and after-sales service.
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REGISTERATION SERVICES IN CHINESE MARKET
SOURCING SERVICES
Always More

9. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Reference Standards
We provide Reference Standards. A reference standard is a highly
purified and well-characterized material suitable to test the identity,
strength, quality, and purity of substances for Chemical, pharmaceutical,
and medicinal products. Using reference standards, working standard
can be prepared. Reference Standards can be taken from USP, EP, BP,
and IP etc.
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10. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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APIs
Guangzhou Tosun Pharmaceutical Limited is one of the leading
suppliers of Global Quality Active Pharmaceutical Ingredients to
producers of medicines across the globe. We only purchase the highest-
quality pharma components to ensure that our pharma customers can
rely on a steady supply of life science ingredients, excipients, and multi-
compendial pharmaceutical products to meet demand and grow their
operations.
We have over 20 years of experience sourcing in the global
pharmaceutical industry and are supported by a team of industry
professionals all working together to support Tosun's sourcing presence
globally.
We will gladly work with you to develop your API and chemical business.
Active pharmaceutical ingredients call for a certain standard of quality
and
reliability that you can count on when you work with API’s from Tosun.
Our vast API inventory and wide selection of excipients make Tosun the
best choice for your active pharmaceutical and chemical supply needs.
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11. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Reference Listed Drugs
Reference Listed Drug (RLD) is an approved drug product to which new
generic versions are compared to show that they are bioequivalent. A
drug company seeking approval to market a generic equivalent must
refer to the Reference Listed Drug in its regulatory submissions. Tosun
can source and supply RLD’s as required (specific batches & expiries) on
an international scale.
We can source innovator samples from different global markets. Our
experience with cold chain shipping and in dealing with international
customs requirements helps us to ensure that temperature-sensitive
study drugs arrive at your clinical trial facilities within the required
temperature range. We use dedicated transport companies that cater
to cold, ambient, and everyday storage and delivery requirements.
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12. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Impurity
Guangzhou Tosun Pharmaceutical Limited provides high-quality impurity
standards to satisfy any quantity required. Our quality enables your
accuracy, helping you to create even better, safer medicines. Impurity
standards in our collection are more than 10,000, each comes with a
comprehensive certificate of analysis.
Synthesis of pharmaceutical impurity standards is one of the major
activities at Guangzhou Tosun Pharmaceutical Limited since its inception.
We are not only acting with different brands such as BP, USP, EP, TLC, LGC,
TRC, etc. but also own our impurity standards brand, TOREF. That’s the
reason, we are the leading manufacturer and supplier of pharmaceutical
impurities in China.
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13. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Other Products
HPLC Column Excipients Intermediate
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14. Guangzhou Tosun Pharmaceutical Ltd. | Jan. 2023
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Contact Us
You can reach us 24/7 from any of the contact options below.
Address
12th Floor, 181 Science Avenue,
Huangpu District, Guangzhou 510663,
China
Phone
+86-020-6639-2523
+86-020-6639-2525
+86-189-2212-0635 (CN No.)/ +1(505)227-9876 (US No.)
+86-189-2212-0635
Email
tonghuiyy218@upharm.cn
Website
www.chinadrugservices.com (en)
Follow Us
Tosun Pharmaceutical Limited
www.shop-tosun.com (zh)
Guangzhou Tosun Pharmaceutical Ltd.
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