Methylnaltrexone Peak Identification Mixture CII (10 mg) (Methylnaltrexone Bromide containing about 0.1% methylnaltrexone related compound A)

Methylparaben (125 mg)

Methylphenidate Hydrochloride CII (125 mg)

Methylphenidate Hydrochloride Erythro Isomer Solution CII (0.5 mL)

Methylphenidate Related Compound A (50 mg) (alpha-Phenyl-2-piperidineacetic Acid Hydrochloride)

Methylprednisolone (200 mg)

Methylprednisolone Acetate (200 mg)

Methylprednisolone Hemisuccinate (250 mg)

Methylprednisolone Hemisuccinate Related Compound D (50 mg) (11Beta,17-Dihydroxy-6alpha-methyl-3,20-dioxopregna-4-en-21-yl hydrogen succinate)

Methylprednisolone Related Compound A (25 mg) (17,21-Dihydroxy-6alpha-methylpregna-1,4-diene-3,11,20-trione)