USP Saccharin RS—
Do not dry.Keep container tightly closed. Add the following:
USP Saccharin Calcium RS
—Dry at 105for 2hours before using.USP28 Add the following:
USP Saccharin Sodium RS
—Dry at 105for 2hours before using.USP28
USP Salicylamide RS
Dry portion over silica gel for 18hours before using.Keep container tightly closed.
USP Salicylic Acid RS
Dry portion over silica gel for 3hours before using.Keep container tightly closed.
USP Salicylic Acid Tablets RS(Dissolution Calibrator,Non-disintegrating)—
The label states the nominal weight of each tablet.Use only whole tablets—extra tablets are provided.Remove any surface dust with a soft brush before using.Keep container tightly closed.Store in a desiccator or in a dry place at room temperature.
USP Salsalate RS
Dry portion in vacuum at 60for 3hours before using.Keep container tightly closed.
USP Saquinavir Mesylate RS.

USP Saquinavir Related Compound A RS
[N-tert-butyl-decahydro-2-[2(R)-hydroxy-4-phenyl-3(S)-[[N-(2-quinolylcarbonyl)-D-asparaginyl]amino]butyl]-(4aS,8aS)-isoquinoline-3(S)-carboxamide] (C38H50N6O5 670.84) .
USP Scopolamine Hydrobromide RS
Dry portion at 105for 3hours before using.Keep container tightly closed and protected from light.
USP Scopoletin RS—
Do not dry.Keep container tightly closed.Store in a refrigerator.Protect from light.
USP Secobarbital RS
Dry portion over silica gel for 18hours before using.Keep container tightly closed.
USP Selegiline Hydrochloride RS
Dry portion in vacuum at 60for 3hours before using.Keep container tightly closed and protected from light.
USP Selenomethionine RS.

USP Sennosides RS
Do not dry before using.Dry a separate portion in vacuum at 100to constant weight to obtain loss on drying for quantitative analyses.Keep container tightly closed.Material is extremely hygroscopic.
USPL-Serine RS
Dry portion at 105for 3hours before using.Keep container tightly closed.
USP Sevoflurane RS—
Do not dry.Keep container tightly closed.Store in a refrigerator.
USP Sevoflurane Related Compound A RS
[1,1,1,3,3-pentafluoroisopropenyl fluoromethyl ether] (C4H2F6O 179.97) —Do not dry.After opening ampul,store in a tightly closed container.Store in a refrigerator.
USP Silver Sulfadiazine RS
Dry portion at 105for 1hour before using.Keep container tightly closed.Protect from light.
USP Silybin RS
Do not dry before using.For quantitative applications use a value of 0.94mg silybin per mg on the as-is basis.Keep container tightly closed and protected from light.Store in a freezer.
USP Silydianin RS
Do not dry before using.Keep container tightly closed.Protect from light.Store in freezer.
USP Simethicone RS
Mix well before using.Keep container tightly closed.
USP Simvastatin RS
Do not dry before using.Keep container tightly closed,protected from light,and store in a freezer.
USP Sincalide RS.

USP Sisomicin Sulfate RS
Do not dry.[Caution:Hygroscopic. ]Correct for volatiles content as determined by heating a separate 100-mg portion at 110at a pressure of 5mm of mercury or less for 3hours.Keep container tightly closed,protected from light,and store in a cold place.
USPb-Sitosterol RS
Do not dry.Store at room temperature.
USP Sodium Ascorbate RS
Do not dry.Keep container tightly closed.Protect from light.
USP Sodium Butyrate RS
Do not dry before using.Keep container tightly closed.This material is hygroscopic.
USP Sodium Fluoride RS
Dry portion at 150for 4hours before using.Keep the container tightly closed.
USP Sodium Lactate RS
Dry portion in vacuum at 60for 4hours before using.Keep container tightly closed.
USP Sodium Nitroprusside RS
This is the dihydrate form.Do not dry before using.Keep container tightly closed.Protect from light.
USP Sodium Propionate RS
Do not dry before using.Keep container tightly closed.
USP Sodium Stearyl Fumarate RS
Do not dry before using.Keep container tightly closed.
USP Somatropin RS
Store in a tight container in a freezer.When reconstituted,store in a cold place,and use within 24hours.
USP1,4-Sorbitan RS
(C6H12O5 164.16) —Do not dry before using.Keep container tightly closed.
USP Sorbitol RS
Do not dry before using.Keep container tightly closed.
USP Sotalol Hydrochloride RS—
Do not dry.Keep container tightly closed.Protect from light.Store in a refrigerator.
USP Sotalol Hydrochloride Related Compound A RS
[N[(4-[[(1-methylethyl)amino]acetyl]phenyl]methanesulfonamide monohydrochloride] (C12H18N2O3S·HCl 306.81) —Do not dry.Keep container tightly closed.Store in a refrigerator.
USP Sotalol Hydrochloride Related Compound B RS
[N-(4-formylphenyl)methanesulfonamide] (C8H9NO3S 199.23) —Do not dry.Keep container tightly closed.Store in a refrigerator.
USP Sotalol Hydrochloride Related Compound C RS
[N-[4-[2-[(1-methylethyl)amino]ethyl]phenyl]methanesulfonamide monohydrochloride] (C12H20N2O2S·HCl 292.83) —Do not dry.Keep container tightly closed.Store in a refrigerator. Change to read:
USP Spectinomycin Hydrochloride RS
This is the pentahydrate form of spectinomycin hydrochloride.USP28Do not dry before using.Keep container tightly closed.Protect from light.Store in a refrigerator.USP28
USP Spironolactone RS
Dry portion at 105for 2hours before using.Keep container tightly closed.
USP Squalane RS
Do not dry before using.After opening ampul transfer the contents to a tightly closed container.
USP Stanozolol RS
Dry portion at a pressure not exceeding 5mm of mercury at 100to constant weight before using.Keep container tightly closed.Protect from light.
USP Stearic Acid RS
Dry portion over silica gel for 4hours before using.Keep container tightly closed.
USP Stearyl Alcohol RS
Do not dry before using.Keep container tightly closed.
USP Powdered St.John’s Wort Extract RS.

USP Streptomycin Sulfate RS
Dry portion in vacuum at a pressure not exceeding 5mm of mercury at 60for 3hours before using.Keep container tightly closed.Protect from light.Store in a cold place.
USP Succinylcholine Chloride RS
Do not dry;determine the water content potentiometrically at time of use for quantitative analyses.Keep container tightly closed.Store in a desiccator.
USP Succinylmonocholine Chloride RS
Dry portion in vacuum at 55for 16hours.Keep container tightly closed.
USP Sucralose RS
—Do not dry.Keep container tightly closed.
USP Sucrose RS
Do not dry before use.Keep container tightly closed.
USP Sufentanil Citrate RS
Dry portion in vacuum at 60for 2hours before using.Keep container tightly closed.
USP Sulbactam RS
Do not dry before using.Keep container tightly closed,and store in a freezer.
USP Sulconazole Nitrate RS
Dry portion in vacuum at 80for 3hours before using.Keep container tightly closed.
USP Sulfabenzamide RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfacetamide RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfacetamide Sodium RS
Determine the water content titrimetrically at time of use.This material is very hygroscopic.Store over silica gel.Keep container tightly closed.Protect from light.Store in a cool place.
USP Sulfachlorpyridazine RS
Dry portion at 105for 3hours before using.Keep container tightly closed and protected from light.
USP Sulfadiazine RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfadimethoxine RS—
Do not dry.Keep container tightly closed.Protect from light. Change to read:
USP Sulfadoxine RS
Do not dry.USP28Keep container tightly closed.Protect from light.
USP Sulfamerazine RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfamethazine RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfamethizole RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfamethoxazole RS
Dry portion at 105for 4hours before using.Keep container tightly closed.Protect from light.
USP Sulfamethoxazole N4-Glucoside RS
Do not dry;use as is.Keep container tightly closed.Protect from light.
USP Sulfanilamide RS
Dry portion at 105for 3hours before using.Keep container tightly closed and protected from light.
USP Sulfanilamide Melting Point RS
Dry portion over silica gel for 16hours before using.The melting range is the temperature range within which the substance coalesces and is completely melted when tested by the USPcapillary tube method.Keep container tightly closed and protected from light.
USP Sulfanilic Acid RS
(C6H7NO3S 173.19) —Dry portion at 105for 4hours before using.Keep container tightly closed.Protect from light.
USP Sulfapyridine RS
Do not dry.Keep container tightly closed.Protect from light.
USP Sulfapyridine Melting Point RS
Dry portion over silica gel for 16hours before using.When melted by the USPcapillary tube method,Class Ia in the general chapter Melting Range or Temperature á741ñ,the observed range falls within the indicated acceptance range.Keep container tightly closed.
USP Sulfaquinoxaline RS.

USP Sulfaquinoxaline Related Compound A RS
[N1-N2-diquinoxalin-2-ylsulfanilamide] (C22H16N6SO2 428.50) .
USP Sulfasalazine RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfathiazole RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfinpyrazone RS—
Do not dry.Keep container tightly closed.
USP Sulfisoxazole RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Sulfisoxazole Acetyl RS
Dry portion at 105for 3hours before using.Keep container tightly closed.Protect from light.
USP Sulindac RS
Dry portion in vacuum at 100for 2hours before using.Keep container tightly closed.
USP Sulisobenzone RS.
Add the following:
USP Sumatriptan RS—
Do not dry.Keep container tightly closed.Protect from light.Store in a refrigerator.USP28 Add the following:
USP Sumatriptan Succinate RS
[1H-indole-5-methanesulfonamide,3-[2-(dimethylamino)ethyl]-N-methyl-,butanedioate (1:1)] (C14H21N3O2S·C4H6O4 413.49) —Do not dry.Keep container tightly closed.Protect from light.Store in a refrigerator.USP28 Add the following:
USP Sumatriptan Succinate Related Compound A RS
[[3-[2-(dimethylamino)ethyl]-2-[[3-[2-(dimethylamino)ethyl]-1H-indol-5-yl]methyl]-1H-indol-5-yl]-N-methylmethanesulfonamide succinate salt] (C27H37N5O2S·C4H6O4 613.77) —Do not dry.Keep container tightly closed.Protect from light.Store in a refrigerator.USP28 Add the following:
USP Sumatriptan Succinate Related Compound C RS
[[3-[2-(dimethylamino)ethyl]-1-(hydroxymethyl)-1H-indol-5-yl]-N-methylmethanesulfonamide succinate salt] (C15H23N3O3S·0.5C4H6O4 384.47) .USP28 Add the following:
USP Sumatriptan Succinate Related Impurities RS
[Mixture of sumatriptan succinate,[3-[2-(methylamino)ethyl]-1H-indol-5-yl]-N-methylmethanesulfonamide maleate salt,sumatriptan succinate related compound C,[3-[2-(dimethylamino-N-oxide)ethyl]-1H-indol-5-yl]-N-methylmethanesulfonamide,and [3-[2-(aminoethyl)-1H-indol-5-yl]-N-methylmethanesulfonamide] .USP28
USP Suprofen RS
Dry portion in vacuum at 70for 4hours before using.Keep container tightly closed.