USP Famotidine RS— Dry portion at a pressure between 1 and 5 mm of mercury at 80 for 5 hours before using. Keep container tightly closed. Protect from light.

USP Felodipine RS— Do not dry. Keep container tightly closed and protected from light.

USP Felodipine Related Compound A RS [ethyl methyl 4-(2,3-dichlorophenyl)-2,6-dimethylpyridine-3,5-dicarboxylate] (C18H17Cl2NO4 382.24) —Do not dry.

USP Fenbendazole RS— Dry portion at 105 for 4 hours before using. Keep container tightly closed. Protect from light.

USP Fenbendazole Related Compound A RS [methyl (1H-benzimidazole-2-yl)carbamate] (C9H9N3O2 191.19) —Do not dry. Keep container tightly closed. Protect from light.

USP Fenbendazole Related Compound B RS [methyl [5(6)-chlorobenzimidazole-2-yl]carbamate] (C9H8ClN3O2 225.63) —Do not dry. Keep container tightly closed. Protect from light.

USP Fenoldopam Mesylate RS— Do not dry.

USP Fenoldopam Related Compound A RS [1-methyl-3-benzazepine-7,8-diol, 6-chloro-2,3,4,5-tetrahydro-1-(4-hydroxyphenyl)-, methanesulfonate (salt)] (C17H18ClNO3·CH4SO3 415.89) —Do not dry. Keep container tightly closed. Protect from light. Store in a desiccator.

USP Fenoldopam Related Compound B RS [1H-3-benzazepine-7,8-diol, 2,3,4,5-tetrahydro-1-(4-hydroxyphenyl)-, methanesulfonate (salt)] (C16H16NO3·CH4SO3 366.42) —Do not dry. Keep container tightly closed. Protect from light. Store in a desiccator.

USP Fenoprofen Calcium RS— This is the dihydrate form of fenoprofen calcium. Do not dry before using; determine the water content titrimetrically at the time of use for quantitative analyses. Keep container tightly closed.

USP Fenoprofen Sodium RS— This is the dihydrate form of fenoprofen sodium. Do not dry before using; determine the water content titrimetrically at the time of use for quantitative analyses. Keep container tightly closed.

USP Fentanyl Citrate RS— Do not dry before using. Keep container tightly closed. Protect from light.

USP Fexofenadine Hydrochloride RS— Do not dry. Keep container tightly closed. Protect from light.

USP Fexofenadine Related Compound A RS [benzeneacetic acid, 4-[1-oxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]butyl]-,-dimethyl] (C32H37NO4 499.65)— Do not dry. Keep container tightly closed. Protect from light.

USP Fexofenadine Related Compound B RS [3-[1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]butyl]-,-dimethyl benzeneacetic acid hydrochloride] (C32H39NO4·HCl 538.12)— Do not dry. Keep container tightly closed. Protect from light. This is the monohydrate form.

USP Finasteride RS —Do not dry before using. Keep container tightly closed.

USP Flecainide Acetate RS— Dry portion in vacuum at a pressure not exceeding 5 mm of mercury at 60 for 2 hours before using. Keep container tightly closed, and store in a refrigerator.

USP Flecainide Related Compound A RS [3-[2,5-bis(2,2,2-trifluoroethoxy)phenyl]-1,5,6,7,8,8a-hexahydroimidazo-[1,5a]pyridine hydrochloride] (C17H18F6N2O2·HCl 432.8) .

USP Floxuridine RS— Dry portion in vacuum over silica gel at 60 for 4 hours before using. Keep container tightly closed. Protect from light.

USP Fluconazole RS— Do not dry. Keep container tightly closed, and avoid exposure to >70% relative humidity. Protect from light.

USP Fluconazole Related Compound A RS [2-[2-fluoro-4-(1H-1,2,4-triazol-1-yl)phenyl]-1,3-bis(1H-1,2,4-triazol-1-yl)-propan-2-ol].

USP Fluconazole Related Compound B RS [2-(4-fluorophenyl)-1,3-bis(1H-1,2,4-triazol-1-yl)-propan-2-ol]— Do not dry. Keep container tightly closed. Protect from light.

USP Fluconazole Related Compound C RS [1,1¢-(1,3-phenylene)di(1H-1,2,4-triazole)] .

USP Flucytosine RS— Dry portion at 105 for 4 hours before using. Keep container tightly closed.

USP Fludarabine Phosphate RS— Keep container tightly closed, protect from light, and store in a desiccator in a refrigerator.

USP Fludeoxyglucose RS— Do not dry. Keep container tightly closed. Protect from light.USP29

USP Fludeoxyglucose Related Compound A RS [4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8.]hexacosane] (C18H36N2O6 376.49) —Keep container tightly closed.

USP Fludeoxyglucose Related Compound B RS (C6H11ClO5 198.60) —Keep container tightly closed. Store in a freezer at –20, in a desiccator.

USP Fludrocortisone Acetate RS— Dry portion in vacuum at 100 for 2 hours over magnesium perchlorate before using. Keep container tightly closed. Protect from light.

USP Flumazenil RS— Do not dry. Keep container tightly closed. Protect from light.

USP Flumazenil Related Compound A RS [8-fluoro-5,6-dihydro-5-methyl-6-oxo-4H-imidazol-[1,5-a][1,4]benzodiazepine-3-carboxylic acid] (C13H10FN3O3 275.24) .

USP Flumazenil Related Compound B RS [Ethyl 8-hydroxy-5,6-dihydro-5-methyl-6-oxo-4H-imidazol-[1,5-a][1,4]benzodiazepine-3-carboxylate] (C15H15N3O4 301.30) .

USP Flumethasone Pivalate RS— Dry portion at 105 for 4 hours before using. Keep container tightly closed. Protect from light.

USP Flunisolide RS— Dry portion in vacuum at 60 for 3 hours before using. This dried standard is the hemihydrate of flunisolide. Keep container tightly closed.

USP Flunixin Meglumine RS— Dry portion at 105 for 4 hours before using. Keep container tightly closed.

USP Fluocinolone Acetonide RS— The label indicates the hydrous or the anhydrous form of fluocinolone acetonide. Dry portion in vacuum at 105 for 3 hours before using. Keep container tightly closed.

USP Fluocinonide RS— Dry portion at 105 for 3 hours before using. Keep container tightly closed.

USP Fluorescein RS— Dry portion over silica gel for 16 hours before using. Keep container tightly closed.

USP Fluorometholone RS— Dry portion in vacuum at 60 for 3 hours before using. Keep container tightly closed. Protect from light.

USP L-Fluorodopa RS.

USP Fluorometholone Acetate RS— Dry portion in vacuum at 60 for 3 hours before using. Keep container tightly closed.

USP Fluoroquinolonic Acid RS— Do not dry before using. Keep container tightly closed. Protect from light.

USP Fluorouracil RS— Dry portion in vacuum over phosphorus pentoxide at 80 for 4 hours before using. Keep container tightly closed. Protect from light.

USP Fluoxetine Hydrochloride RS— Do not dry before using. Keep container tightly closed and protected from light.

USP Fluoxetine Related Compound A RS [N-methyl-3-phenyl-3-[(,,-(trifluoro-m-tolyl)oxy]propylamine hydrochloride] (C17H18F3NO·HCl 345.79) —Do not dry before using. Keep container tightly closed and protected from light.

USP Fluoxetine Related Compound B RS [N-methyl-3-phenylpropylamine] (C10H15N 149.24) —This is a solution containing approximately 2 mg of fluoxetine related compound B in diluted hydrochloric acid (approximately 0.01 N). Store in a refrigerator. After opening the ampul, store it in a tightly closed container.

USP Fluoxetine Related Compound C RS [N-methyl-N-[3-phenyl-3-(4-trifluoromethyl-phenoxy)-propyl]-succinamic acid] (C21H22F3NO4 409.40) —Do not dry. Keep container tightly closed. Protect from light.

USP Fluoxymesterone RS— Dry portion at 105 for 3 hours before using. Keep container tightly closed. Protect from light.

USP Fluphenazine Decanoate Dihydrochloride RS— Do not dry; determine the water content titrimetrically at time of use. Keep container tightly closed and protected from light.

USP Fluphenazine Enanthate Dihydrochloride RS (C29H38F3N3O2S·2HCl 622.63) —Do not dry. Keep container tightly closed and protected from light.

USP Fluphenazine Hydrochloride RS— Dry portion at 65 for 3 hours before using. Keep container tightly closed. Protect from light.

USP Flurandrenolide RS— Dry portion in vacuum at 105 for 4 hours before using. Keep container tightly closed. Protect from light. Store in a cold place.

USP Flurazepam Hydrochloride RS— Do not dry. Keep container tightly closed. Protect from light. Store in a desiccator.

USP Flurazepam Related Compound C RS [5-chloro-2-(2-diethylaminoethyl(amino)-2¢-fluorobenzophenone hydrochloride] (C19H22ClFN2O·HCl 385.31) —Do not dry. Keep container tightly closed. Protect from light. Store in a refrigerator.USP29

USP Flurazepam Related Compound F RS [7-chloro-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one] (C15H10Cl FN2O 288.71) —Keep container tightly closed and protected from light. Dry portion in vacuum over silica gel at 60 for 4 hours before using.

USP Flurbiprofen RS— Do not dry. Keep container tightly closed.

USP Flurbiprofen Related Compound A RS [2-(4-biphenylyl)propionic acid] (C15H14O2 226.28) —Do not dry before using. Keep container tightly closed.

USP Flurbiprofen Sodium RS— Dry portion in vacuum at a pressure not exceeding 1 mm of mercury over phosphorus pentoxide in a suitable drying tube at 60 for 18 hours before using. Keep container tightly closed.

USP Flutamide RS— Dry portion in vacuum at 60 for 3 hours before using. Keep container tightly closed and protected from light.

USP o-Flutamide RS [2-methyl-N-[6-nitro-3-(trifluoromethyl)phenyl]propanamide] (C11H11F3N2O3 276.22) —Do not dry before using. Keep container tightly closed. Protect from light.

USP Fluticasone Propionate RS [S-(fluoromethyl)6,9-difluoro-11,17-dihydroxy-16-methyl-3-oxoandrosta-1,4-diene-17-carbothioate, 17-propionate] (C25H31F3O5S 500.6).

USP Fluticasone Propionate Resolution Mixture RS— It is a mixture of fluticasone propionate and fluticasone propionate related compound D.

USP Fluticasone Propionate System Suitability Mixture RS— It is a mixture of USP Fluticasone Propionate RS and fluticasone propionate related compounds B, C, and D.

USP Fluvastatin Sodium RS.

USP Fluvastatin Related Compound A RS [fluvastatin hydroxydiene].

USP Fluvastatin Related Compound B RS [fluvastatin t-butyl ester].

USP Fluvastatin for System Suitability RS [fluvastatin sodium and fluvastatin sodium anti-isomer].

USP Fluvoxamine Maleate RS. —Dry portion at 80 for 2 hours before using. Keep container tightly closed. Protect from light.USP29

USP Folic Acid RS— Do not dry; determine the water content at time of use. Keep container tightly closed. Protect from light.

USP Folic Acid Related Compound A RS [calcium formyltetrahydrofolate] —Do not dry. Keep container tightly closed and protected from light.

USP Formononetin RS— Do not dry. Keep container tightly closed. Protect from light. Store in a refrigerator.

USP 4-Formylbenzenesulfonamide RS— (NAME CHANGE) See USP Mafenide Related Compound A RS.

USP 10-Formylfolic Acid RS— Do not dry. Keep container tightly closed, protected from light, and store in a refrigerator.

USP Fosphenytoin Sodium RS— Do not dry. For quantitative application, determine the water content titrimetrically at the time of use. Keep container tightly closed. Protect from light.

USP Fructose RS— Dry portion in vacuum at 70 for 4 hours before using. Keep container tightly closed. Protect from light.

USP Fumaric Acid RS— Do not dry before using. Keep container tightly closed.

USP Furazolidone RS— Dry portion at 100 for 1 hour before using. Keep container tightly closed. Protect from light.

USP Furosemide RS— Dry portion at 105 for 3 hours before using. Keep container tightly closed. Protect from light.

USP Furosemide Related Compound A RS [2-chloro-4-N-furfurylamino-5-sulfamoylbenzoic acid] (C12H11ClN2O5S 330.74) —Do not dry before using. Keep container tightly closed and protected from light.

USP Furosemide Related Compound B RS [4-chloro-5-sulfamoylanthranilic acid] (C7H7ClN2O4S 250.66) —Do not dry before using. Keep container tightly closed and protected from light.