| Berberis virgetorum root | 7V8RE5HU83 | structurallyDiverse |
| Berberis virgetorum whole | LMQ3D92WEY | structurallyDiverse |
| Berberrubine | ZZT5GBZ8KE | chemical |
| Berchemia floribunda whole | E2RS4P3U2R | structurallyDiverse |
| Beretemcel | YSW8E5EV4Q | structurallyDiverse |
| Bergenin | L84RBE4IDC | chemical |
| Bergenin monohydrate | WG6VBX5A22 | chemical |
| Bergera koenigii leaf | P5PS83HNE4 | structurallyDiverse |
| Bergera koenigii leaf oil | X6T9C9Z55Z | structurallyDiverse |
| Bergera koenigii stem | G8E986KU8B | structurallyDiverse |
| Bergera koenigii whole | 67UQM80W9W | structurallyDiverse |
| Berobenatide | UN3RWY4TEG | protein |
| Berobenatide acetate | U526JK2JD8 | protein |
| Beroterkib | MLZ3S54VAF | chemical |
| Beroterkib anhydrous | 14FDK6ISC9 | chemical |
| Berotralstat | XZA0KB1BDQ | chemical |
| Berotralstat dihydrochloride, (S)- | H9WP8EYK6L | chemical |
| Berotralstat hydrochloride | 88SH1NBL2B | chemical |
| Berotralstat, (RS)- | 6HPY825YQD | chemical |
| Berotralstat, (S)- | 8YE5ABM3A9 | chemical |
| Bersiporocin | TTU6QSK1G5 | chemical |
| Bersiporocin Hydrochloride | Q1X50E5QJL | chemical |
| Beruzatatug | 74MGE2BV54 | protein |
| Beruzatatug Pelitecan | DAW7F54AQE | protein |
| Berzanoflast | 7Q2LJE7DEF | chemical |
| Besnotamig | 9E5QRF8H7K | protein |
| Besufetamig | 8YCQ8727FB | protein |
| Besvatresgene Autoleucel | VBZ33SRC28 | structurallyDiverse |
| Besvatresgene autoleucel expressed T-cell receptor | TU89AG8SPJ | protein |
| Besvatresgene autoleucel expressed preprotein | RFU39XY2EN | protein |
| Besvatresgene autoleucel lentiviral vector | XLV5D8LY3P | structurallyDiverse |
| Besvatresgene autoleucel transgene insert | 7BR8NV2HGY | nucleicAcid |
| Beta Lactamase Class A (Group 2B) | Y698Q2KG4H | mixture |
| Beta Lactamase Class A (Group 2BE) | UMY65X8YSK | mixture |
| Beta Lactamase Class A (Group 2BR) | 4FDU5DJ2MF | mixture |
| Beta Lactamase Class A (Group 2C) | V7UZC3J463 | mixture |
| Beta Lactamase Class A (Group 2F) | UUN6KYJ8RH | mixture |
| Beta Lactamase Class B (B2) (Group 3B) | DEB4B56G3B | mixture |
| Beta Lactamase Class C (Group 1) | D3V2Z42VLY | mixture |
| Beta Lactamase Class C (Group 1E) | LYH9T62CK6 | mixture |
| Beta Lactamase Class D (Group 2D) | KN8F69T8W6 | mixture |
| Beta Lactamase Class D (Group 2DE) | 3VPD3865RD | mixture |
| Beta Lactamase Class D (Group 2DF) | JWC75UV9CD | mixture |
| Beta-1,4 N-acetylgalactosaminyltransferase 2 | EV3Q4U6PGB | protein |
| Beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase | BM3E6Y4HDG | protein |
| Beta-2-microglobulin | ZVJ2Y47NLW | protein |
| Beta-D-homoDNA-C(Bz) Phosphoramidite | ST8FT5235G | chemical |
| Beta-galactosidase gene (teserpaturev) | MF5ZNB9PDE | nucleicAcid |
| Beta-nerve growth factor (unprocessed protein) | WT4R7998TA | protein |
| Betadex | JV039JZZ3A | chemical |