| Product Name | CAS No |
| Harpagide | 6926-08-5 |
| Harringtonine | 26833-85-2 |
| HATU | 148893-10-1 |
| HBPipU | 190849-64-0 |
| HBPyU | 105379-24-6 |
| HBTU | 94790-37-1 |
| HCTU | 330645-87-9 |
| HEPPS | 16052-06-5 |
| HEPPSO | 68399-78-0 |
| 2,2,4,4,6,8.8-Heptamethylnonane | 4390-04-9 |
| 2-Heptyl-1,4-dihydro-4-oxo-3-quinolinecarboxaldehyde | 402718-53-0 |
| 6-n-Heptylmercaptopurine | 83277-80-9 |
| 3-Heptylthiophene | 65016-61-7 |
| 2-(Hexadecyloxy)-6-methyl-4H-3,1-benzoxazin-4-one | 282526-98-1 |
| 1-Hexadecylphosphorylcholine | 58066-85-6 |
| 3-Hexadecylthiophene | 119269-24-8 |
| Hexaethylene glycol dimethyl ether | 1072-40-8 |
| Hexamethyldiamine | 124-09-4 |
| 1,1,1,3,3,3-Hexamethyldisilazane | 999-97-3 |
| Hexyl-3-[5-(2-hexyloxycarbonylethyl)pyrazin-2-yl]propionate | |
| 4'-Hexyl-4-Biphenylcarbonitrile | 41122-70-7 |
| 6-n-Hexylaminopurine | 14333-96-1 |
| 2-(4-hexylphenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane | 881838-90-0 |
| 3-Hexylthiophene | 1693-86-3 |
| Histamine 2HCl | 56-92-8 |
| L-Histidine | 71-00-1 |
| L-(-)-Histidinol dihydrochloride | 1596-64-1 |
| HOCT | 137156-41-3 |
| Holmium (III) oxide 99.9% | 12055-62-8 |
| Homatropine hydrobromide | 51-56-9 |
| Homoharringtonine | 26833-87-4 |
| Homopiperazine | 505-66-8 |
| L-Homoserine lactone HBr | 15295-77-9 |
| Honokiol | 35354-74-6 |
| Hordenine | 539-15-1, 62493-39-4 |
| HOTT | 212333-72-7 |
| HOTU | 333717-40-1 |
| HPTU | 364047-51-8 |
| HSPyU | 207683-26-9 |
| HSTU | 265651-18-1 |
| Huperzine A | 120786-18-7 |
| Hyaluronic acid sodium salt | 9067-32-7 |
| Hydantoin | 461-72-3 |
| Hydrazine hydrochloride | 2644-70-4 |
| 4-Hydrazino-7-nitrobenzofurazane | 90421-78-6 |
| 3-Hydrazino-s-triazolo[3,4-a]phthalazine | 21517-17-9 |
| Hydroquinone monobenzoate | 2444-19-1 |
| Hydroquinone monobenzyl ether | 103-16-2 |
| 5-Hydroxy-1-cyclooctene | 4277-34-3 |
| 5-Hydroxy-1-Methyl-1H-Pyrazole | 33641-15-5 |