| Brexanalone | 516-54-1 |
| Brexanolone | 516-54-1 |
| Brexanolone Intermediates | |
| Brexpiprazole intermediates | 70500-72-0 |
| Brinzolamide Intermediates | |
| Brivudine | 69304-47-8 |
| Broad spectrum cannabidiol | 13956-29-1 |
| Broad spectrum cannabinol | 521-35-7 |
| Bromocresol green | |
| Bronopol | 52-51-7 |
| Bufalin | 465-21-4 |
| Buformin | 692-13-7 |
| Burdock | |
| Butaphosphan | 17316-67-5 |
| Butcher's broom root | |
| Butethamate Citrate | 13900-12-4 |
| Butylamine | 109-73-9 |
| Cabozantinib intermediates | 598-10-7 |
| Cafedrine Hydrochloride | 22465-48-1 |
| Caffeine Anhydrous | 58-08-2 |
| Caffeine Citrate | 69-22-7 |
| Calamus root | |
| Calcitonin | 9007-12-9 |
| Calcium Gluceptate | 29039-00-7 |
| Calcium Monoethyl Fumarate | 62008-22-4 |
| Calcium Sennosides | |
| Calcium Undecylenate | 689-62-7 |
| Calcium hydrogen phosphate anhydrous | 7757-93-9 |
| Calcium iodate | 7789-80-2 |
| Calcium threonate | 70753-61-6 |
| Calendula flower | |
| Calicheamicin | 108212-75-5 |
| Californian poppy herb | |
| Camomile fluid extract | |
| Camostat | 59721-28-7 |
| Camphor tree natural | |
| Canagliflozin intermediate | 9082-07-9 |
| Cannabichromene | 20675-51-8 |
| Cannabigerol | 25654-31-3 |
| Cannabinol | 521-35-7 |