| 56-75-7 | Chloramphenicol | C11H12Cl2N2O5 |
| 56-12-2 | 4-Aminobutyric acid | C4H9NO2 |
| 56-84-8 | L-Aspartic acid | C4H7NO4 |
| 56-69-9 | 5-Hydroxytryptophan | C11H12N2O3 |
| 56-41-7 | L-alpha-Alanine | C3H7NO2 |
| 56-92-8 | Histamine dihydrochloride | C5H11Cl2N3 |
| 56-85-9 | L-Glutamine | C5H10N2O3 |
| 56-65-5 | Adenosine triphosphate | C10H16N5O13P3 |
| 56-95-1 | Chlorhexidine Diacetate | C22H30Cl2N10.2C2H4O2 |
| 56-18-8 | DIPROPYLENETRIAMINE | C6H17N3 |
| 56-25-7 | Cantharidin | C10H12O4 |
| 56-53-1 | Diethylstilbestrol | C18H20O2 |
| 56-35-9 | Bis(tributyltin) oxide | C24H54OSn2 |
| 56-17-7 | Cystamine dihydrochloride | C4H12N2S2.2HCl |
| 56-04-2 | Methylthiouracil | C5H6N2OS |
| 56-24-6 | TRIMETHYLTIN HYDROXIDE | C3H10 O Sn |
| 56-82-6 | DL-GLYCERALDEHYDE | C3H6 O3 |
| 56-73-5 | D(+)-GLUCOPYRANOSE 6-PHOSPHATE | C6H13 O9 P |
| 56-59-7 | Felypressin | C46H65N13O11S2 |
| 56-29-1 | HEXOBARBITAL | C12H16 N2 O3 |
| 56-57-5 | 4-NITROQUINOLINE N-OXIDE | C9H6 N2 O3 |
| 56-15-5 | 3,3'-iminobis(propionohydrazide) | C6H15 N5 O2 |
| 56-28-0 | Triclodazole | C17H15 Cl3 N2 O2 |
| 56-36-0 | TRI-N-BUTYLTIN ACETATE | C14H30 O2 Sn |
| 56-39-3 | GLYCINE, [1-14C] | C2H5 N O2 |
| 56-88-2 | L-CYSTATHIONINE | C7H14N2O4S |
| 56-94-0 | Demecarium bromide | C32H52N4O4.2Br |
| 56-97-3 | 1,1'-TRIMETHYLENE-BIS(4-FORMYLPYRIDINIUM BROMIDE) DIOXIME | C15H18 N4 O2 . 2 Br |