| Not official USP-NF text | ||||
| METHOCARBAMOL | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 16(3) | G27 | None Cited | Organic volat. impurities | See Method I  467 |
| 17(5) | G43 | None Cited | Organic volat. impurities | See Method V 467 |
| 9(2) | L1 | ODS Ultrapak | Related impurities | NULL |
| 9(2) | L1 | MicroBondapak C18 | Related impurities | { Alternative reagent; longer retention times |