About WesynTech
A Shanghai chemistry company supplying building blocks, custom synthesis and scale-up material to pharmaceutical and biotech R&D worldwide.
WesynTech (Shanghai) Pharmaceutical Technology Co., Ltd is a high-tech enterprise headquartered in Shanghai, China, supplying chemical products and technical services to pharmaceutical and biotech companies worldwide.
The company's stated purpose is narrow and useful: help customers improve the efficiency of drug discovery and development, keep product quality consistent, bring R&D and manufacturing costs down, and push the industry towards greener practice. Three core services carry that — the supply of privileged building blocks, custom synthesis for early-stage R&D projects, and the supply of starting materials and key intermediates for scale-up programmes.
The team
Research and development is run by 4 master's-degree chemists, 6 bachelor's-degree chemists and 4 research assistants — fourteen people working across close to 600 m² of laboratory space. That size matters in both directions: large enough to run parallel projects, small enough that the chemist who scoped your route is the one who answers when you call about it.
Laboratories and pilot plant
The site includes a standard pilot plant with two 20 L single-layer reactors and six 50 L double-layer reactors, supporting routine reactions from −70 °C to 200 °C, together with four 50 L rotary evaporators. That temperature window covers both cryogenic work and high-temperature cyclisations without sending material off site.
Custom synthesis capability runs from gram to hundred-kilogram scale, which is enough to carry a compound from an early product development run through subsequent process optimisation. For industrial-scale production the company works through long-term partnerships with several chemical plants for industrial-scale production.
Where the technical depth sits
WesynTech states a notable technical advantage in four areas. They are not a list of everything the team can do — they are the four classes that most often decide whether a synthesis is straightforward or expensive.
- Chiral compounds
- Fluorine-containing compounds
- Boronic acids and boronate esters
- Common heterocyclic systems
By the numbers
What the site can actually do
Straight answers
What this site does not claim
This site was rebuilt from the content the company itself published. Where the old site was silent, this one stays silent rather than filling the gap with something plausible. The open items are listed here so a buyer can ask about them directly.
- Equipment list: the English About page states two 20 L single-layer reactors and six 50 L double-layer reactors at −70 °C to 200 °C; the Chinese page of the same site states two 50 L single-layer and six 100 L double-layer reactors at −50 °C to 200 °C. The English figures are used throughout this site — confirm which is current.
- Company founding year, registered capital and any ISO / GMP certification: not stated anywhere on the old site, so no claim is made here.
- Export markets and customer references: the old site carried an empty 'Successful case' section with no content, so no customer or country claim appears on this site.
- Downloads: the old site listed two separate download entries ('Product catalogue 202604' and 'Latest stock list'), but both links return the identical XLSX file. It is published here once, as the product catalogue. Supply the real stock list if it differs.
- Five of the 27 featured compounds were left outside both the API and Intermediate categories on the old site; they are grouped here as 'Catalogue Building Blocks'. Confirm the intended category for each.
- Per-compound specifications (purity, appearance, packaging, lead time, available analytical data) were blank on the old site for every product, so no numeric specification is published. Supply a specification sheet to have these filled in.
- WhatsApp: none was listed on the old site, so the sticky contact buttons use e-mail and telephone. Provide a mobile messaging number and a one-tap chat button will be added.
- Company address: the English pages showed only 'Shanghai Xumiao Road'; the full address used here is taken from the Chinese pages of the same site.
Work with the people, not the brochure
Fourteen chemists, one building, one route from first gram to repeat campaign.