| 51570-20-8 | Chitosanase | | | 1 | 3507.90 | | Send  | 5811.75 | |
| 51580-86-0 | Sodium dichloroisocyanurate dihydrate | 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, 1,3-dichloro-, sodium salt, dihydrate | | | 2933.69 ; 3402.20 | 3 | Send  | 1293437.88 | |
| 516-06-3 | DL-valine | 2-amino-3-methylbutanoic acid | 1 | | 2922.49 | | Send  | 166347.18 | |
| 516-12-1 | N-iodosuccinimide | 1-Iodopyrrolidine-2,5-dione | 1 | | 2929.90 | | Send  | 4436.47 | |
| 5160-02-1 | Pigment red 53:1 | Barium bis{5-chloro-2-[(2-hydroxynaphthalen-1-yl)diazenyl]-4-methylbenzenesulfonate} | | 1 | 3206.49 | | Send  | 20430048.36 | |
| 5165-97-9 | Sodium Acryloyldimethyltaurate | Sodium 2-methyl-2-(prop-2-enoylamino)propane-1-sulfonate | 1 | | 2924.19 | | Send  | 484628.36 | |
| 517-28-2 | Hematoxylin | Haematoxylin | | 1 | 3204.90 | | Send  | 814102.14 | |
| 51707-55-2 | Thidiazuron | 1-phenyl-3-(thiadiazol-5-yl)urea | 1 | | 2934.99 ; 3821.00 | | Send  | 275411.45 | |
| 51728-26-8 | Pentaerythritol, ethoxylated, esters with acrylic acid | Pentaerythritol, ethoxylated, esters with acrylic acid | | 1 | 2930.90 | | Send  | 60.44 | |
| 51745-87-0 | Trititanium oxide | Oxygen(2-) titanium(4+) | 1 | | 3824.60 | | Send  | 1837.58 | |