By API Standards
- Baclofen
- Balsalazide
- Baricitinib
- Barnidipine
- Beclometasone
- Beclomethasone
- Bedaquiline
- Bempedoic acid
- Benazepril
- Bendamustine
- Benserazide
- Benserazide Hydrochloride
- Benzalkonium Chloride
- Benzatropine
- Benzbromarone
- Benzenesulfonic Acid
- Benzhydrylamine
- Benznidazole
- Benzocaine
- Benzoic Acid
- Benzoyl Peroxide
- Benzydamine
- Bepotastine
- Betahistine
- Betamethasone
- Betamethasone Dipropionate
- Betaxolol
- Betaxolol Hydrochloride
- Betrixaban
- Bexagliflozin
- Bexarotene
- Bicalutamide
- Bictegravir
- Bilastine
- Bimatoprost
- Binimetinib
- Bisoprolol
- Bisoprolol Fumarate
- Blonanserin
- Boldenone Cypionate
- Bortezomib
- Bosentan
- Bosutinib
- Brexpiprazole
- Brimonidine
- Brimonidine Tartrate
- Brinzolamide
- Brivanib
- Bromazepam
- Bromfenac
- Bromhexine
- Bromopride
- Brompheniramine Maleate
- Budesonide
- Building blocks
- Bumetanide
- Bupivacaine
- Bupropion
- Buspirone
- Busulfan
- Butamirate
- Butoconazole
- Butylated Hydroxy Toluene
- Butylparaben
- Butylphthalide