APIs / Intermediates

We mainly supply APIs to pharmaceutical manufacturers, including originators, generic drug companies, and OTC (over-the-counter) drug companies. We also coordinate the outsourcing of drug formulation manufacturers by utilizing our various experience and information. Moreover, we focus on sales of our own and BASF's pharmaceutical vitamins, following in the footsteps of Takeda Pharmaceutical Industries, Ltd.

• Tetrahydrozoline hydrochloride
• Tafluprost
• Timolol Maleate
• Travoprost
• Bimatoprost
• Brimonidine tartrate
• Bromfenac sodium hydrate
• Latanoprost

• Irbesartan
• Telmisartan

• Rivaroxaban (under development)
• Edoxaban tosilate hydrate (under development)

• Metformin hydrochloride
• Empagliflozin (under development)
• dapagliflozin propylene glycolate hydrate (under development)

• Loxoprofen sodium hydrate

• Rebamipide (under development)

• Gemcitabine hydrochloride

• Aripiprazole
• Duloxetine hydrochloride (under development)

• Amikacin sulfate
• Tetracycline hydrochloride
• Nadifloxacin

• Efinaconazole (under development)

• Benzethonium chloride

• Silodosin
• Naftopidil (under development)
• Tadalafil

• Tadalafil
• Sodium hyaluronate (under development)

• Ascorbic acid
• Thiamine chloride hydrochloride
• Thiamine mononitrate
• Fursulthiamine hydrochloride
• Riboflavin
• Niacinamide
• Calcium pantothenate
• Pyridoxine hydrochloride
• Cyanocobalamin
• Tocopherol acetate

Watanabe Chemical has been working with top pharmaceutical companies from the inception of the new drug development stage, proposing and selling intermediates as well as providing intermediates information.
With Japanese manufacturers becoming active in establishing overseas manufacturing base these recent years, we are engaged in gathering information on a global level to provide accurate and abundant information on overseas synthetic manufacturers.