脲
| CAS | 編號 |
|---|---|
| 24812-90-6 | 2033 |
| 823-54-1 | 5307 |
| 140-22-7 | 7570 |
| 70988-04-4 | 11969 |
| 348-40-3 | 14467 |
| 57966-95-7 | 18892 |
| 133174-15-9 | 19002 |
| 45234-13-7 | 19004 |
| 1197160-78-3 | 19144 |
| 13072-69-0 | 21580 |
| 5165-28-6 | 22248 |
| 796967-16-3 | 22400 |
| 623142-96-1 | 22465 |
| 219580-11-7 | 22593 |
| 21306-56-9 | 25633 |
| 5369-03-9 | 25634 |
| 93479-97-1 | 26592 |
| 226700-79-4 | 27142 |
| 58481-39-3 | 32086 |
| 6089-09-4 | 32190 |