| 52277-33-5 | POLY(OXY-1,4-BUTANEDIYL),ALPHA-(1-OXO-2-PROPENYL)-OMEGA-. | (C4H8 O)n C6 H6 O3 |
| 52277-69-7 | hydrogen bis[1-[(2-hydroxy-5-nitrophenyl)azo]naphthalen-2-olato(2-)]cobaltate(1-) | C32H18 Co N6 O8 . H |
| 52277-71-1 | hydrogen [1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholato(2-)]chromate(1-) | C32H18 Cr N6 O8 . H |
| 52277-85-7 | 1H-pyrazolol | C3H4 N2 O |