| Hydrogenated C9 resin oil (Softening Point 100 C) | M5U9WEF78Y | polymer |
| Hydrogenated Castor Oil | ZF94AP8MEY | structurallyDiverse |
| Hydrogenated Castor Oil Dimer Dilinoleate (3600 mPa.s) | 9SZU2ABV5H | structurallyDiverse |
| Hydrogenated Castor Oil/Sebacic Acid Copolymer | H7DBQ4WF5M | structurallyDiverse |
| Hydrogenated Ethylhexyl Olivate | JBH5K4WD8L | mixture |
| Hydrogenated Polycyclopentadiene (600 mPa·s) | K8JR2AUY28 | — |
| Hydrogenated Polycyclopentadiene (730 WAMW) | 88ZYE4HTX2 | polymer |
| Hydrogenated Polyisobutene (1300 MW) | 7D1YQ9Y5EZ | mixture |
| Hydrolyzed Hyaluronic Acid 300 | 4ND5V3U4UZ | polymer |
| Hydrolyzed Hyaluronic Acid 50 | 77Y34NEY7P | polymer |
| Hydrolyzed Rice Protein (Enzymatic; 2000 MW) | J9JP2XE45M | structurallyDiverse |
| Hydrolyzed Senegalia macrostachya seed protein (Enzymatic; 800 MW) | 49W7E9YC8L | structurallyDiverse |
| Hydrolyzed Soy Protein (Enzymatic; 2000 MW) | 1394NXB9L6 | structurallyDiverse |
| Hydrolyzed hyaluronic acid 20 sodium | 9H4B7P6XZ3 | polymer |
| Hydrolyzed hyaluronic acid decasaccharide | BM5VG7G3AD | polymer |
| Hydrolyzed hyaluronic acid hexasaccharide | Y5A7EB6JUS | polymer |
| Hydrolyzed hyaluronic acid octasaccharide | 6HS3E42GYG | polymer |
| Hydrolyzed hyaluronic acid tetrasaccharide | FB2X65H7VJ | polymer |
| Hydrolyzed sodium hyaluronate hexasaccharide | L7X3AR4MVE | polymer |
| Hydrolyzed sodium hyaluronate octasaccharide | QE59HVK7J4 | polymer |
| Hydrolyzed sodium hyaluronate tetrasaccharide | JPW9J3T2NH | polymer |
| Hydromethylthionine | IHU4GYZ2R3 | chemical |
| Hydromorphine 3-propionate hydrochloride | F5VE5UMW3D | chemical |
| Hydromorphone | Q812464R06 | chemical |
| Hydromorphone hydrochloride | L960UP2KRW | chemical |
| Hydromorphone sulfate | 75Y990NH3Z | chemical |
| Hydronidone | RXQ128313W | chemical |
| Hydroquinone | XV74C1N1AE | chemical |
| Hydrotecan | HPS9H7F4JX | chemical |
| Hydroxetamine | JQ2YE6NTZ8 | chemical |
| Hydroxetamine, (R)- | 332CKV76EQ | chemical |
| Hydroxetamine, (S)- | FYP367LH9T | chemical |
| Hydroxocobalamin acetate | S535M27N3Q | chemical |
| Hydroxy Gliclazide | 22WWT9N6C3 | chemical |
| Hydroxy Pioglitazone (M-IV) ?-D-Glucuronide | 4A7G3FVF5Y | chemical |
| Hydroxy Pioglitazone (M-VII) | FN5633NLC3 | chemical |
| Hydroxy brimonidine | 7FE277GP4P | chemical |
| Hydroxy darunavir | US8D8UZX05 | chemical |
| Hydroxy empagliflozin | 6ETP4W2MD3 | chemical |
| Hydroxy lisdexamfetamine, (S,R)- | 3Y7BPE6TPA | chemical |
| Hydroxy varenicline | DKH82FXZ87 | chemical |
| Hydroxy-2alpha-(hydroxymethyl)-5alpha-androstan-3-one, 17beta- | QU7U82B6FR | chemical |
| Hydroxy-3-oxo-androsta-1,4-diene-17?-carboxylic Acid, 11?- | XBC5NYS5SZ | chemical |
| Hydroxy-5-cholenic acid, 3?- | EVD67Y26MR | chemical |
| Hydroxyadapalene | 6482CJV0PZ | chemical |
| Hydroxyalachlor | E5QLP6U63S | chemical |
| Hydroxyalantolactone, 1?- | GWC62NA7PP | chemical |
| Hydroxyamino lamotrigine | FJE3UP97XB | chemical |
| Hydroxyapatite/beta-tricalcium phosphate (HA/TCP) | 54ZU4425M3 | specifiedSubstanceG1 |
| Hydroxybenzindazole | GJ54V4F3PE | chemical |