| Not official USP-NF text | ||||
| BUTABARBITAL | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 11(1) | G37 | Poly-I 110 | Assay | 10% Poly I 110 on 80/100 Supelcoprot BW (S1AB). |
| 11(1) | S1AB | Gas Chrom Q | Assay | NULL |
| 17(3) | G43 | None Cited | Organic volat. impurities | See Method V  467 |