| Not official USP-NF text | ||||
| DIFLUNISAL | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 9(4) | L1 | MicroBondapak C18 | Assay | Reprinted 11(2), 16(3) |
| 16(3) | G27 | None Cited | Organic volat. impurities | See Method I  467 |
| 17(5) | G43 | None Cited | Organic volat. impurities | See Method V 467 |