| 5-oxo-1-phenyl-2-thioxo-4-imidazolidineacetic aci |
| 3-phenyl-2-thiohydantoin-5-acetic acid |
| 3-phenyl-2-thio-5-hydantoinacetic aci |
| 5-oxo-1-phenyl-2-thioxo-4-imidazolidineacetic acid |
| aspartic acid phenylthiohydantoin |
| aspartic phenylthiohydantoin |
| pth-aspartic acid |
