| Not official USP-NF text | ||||
| PENTOBARBITAL | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 32(2) | L1 | Gemini C18 | Assay | 4.6 mm x 25 cm, 5 µm, manufacturer Phenomenex. |
| 29(3) | L1 | ZORBAX Eclipse XDB-C18 | Assay and Related Compounds | 4.6 mm x 25 cm, 5 im, manufacturer Agilent. |
| 30(1) | L1 | ZORBAX Eclipse XDB-C18 | Assay and Related Compounds | 4.6 mm x 25 cm, 5 µm, manufacturer Agilent. Same method as in PF 29(3). |
| 17(3) | G43 | None Cited | Organic volat. impurities | See Method V  467 |