USP Paclitaxel RS
Click to View Structure .

USP Paclitaxel Related Compound A RS
Click to View Structure [cephalomannine] .

USP Paclitaxel Related Compound B RS
Click to View Structure [10-deacetyl-7-epipaclitaxel] .

USP Paclitaxel Impurity Mixture RS—
Mixture of paclitaxel and the following related compounds: propyl analog, cephalomannine, sec-butyl analog, n-butyl analog, benzyl analog, baccatin VI, pentyl analog, and 7-epipaclitaxel.

USP Padimate O RS
Click to View Structure .

USP Palmitic Acid RS
Click to View Structure .

USP Pamidronate Disodium RS.
Click to View Structure

USP Pamoic Acid RS
Click to View Structure (C23H16O6 388.38) .

USP Pancreatin Amylase and Protease RS
.

USP Pancreatin Lipase RS
.

USP Pancuronium Bromide RS
Click to View Structure [3,17-dihydroxy-2,16-dipiperidinyl-5-androstane, 3,17-diacetate, dimethobromide] (C35H60Br2N2O4 732.67).

USP Racemic Panthenol RS
Click to View Structure .

USP Pantolactone RS
Click to View Structure .
Add the following:

USP Pantoprazole Sodium RS
. (RB 18-Jun-2008)
Add the following:

USP Pantoprazole Related Compound A RS
[5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)methyl]sulfonyl]-1H-benzimidazole] (C16H15F2N3O5S 399.37). (RB 18-Jun-2008)
Add the following:

USP Pantoprazole Related Compound B RS
[5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)methyl]thio]-1H-benzimidazole] (C16H15F2N3O3S 367.37). (RB 18-Jun-2008)
Add the following:

USP Pantoprazole Related Compound C RS
[5-(difluoromethoxy)-1H-benzimidazole-2-thiol] (C8H6F2N2OS 216.21). (RB 18-Jun-2008)
Add the following:

USP Pantoprazole Related Compound D and F Mixture RS—
A mixture of 5-(difluoromethoxy)-2-[(RS)-[(3,4-dimethoxypyridin-2-yl)methyl]sulfinyl]-1-methyl-1H-benzimidazole and 6-(difluoromethoxy)-2-[(RS)-[(3,4-dimethoxypyridin-2-yl)methyl]sulfinyl]-1-methyl-1H-benzimidazole (C17H17F2N3O4S 398.40). (RB 18-Jun-2008)
Add the following:

USP Pantoprazole Related Compound E RS—
A mixture of the stereoisomers of 6,6¢-bis(difluoromethoxy)-2,2¢-bis[[(3,4-dimethoxypyridin-2-yl)methyl]sulfinyl]-1H,1¢H-5,5¢-bibenzimidazolyl (C32H28F4N6O8S2 764.74). (RB 18-Jun-2008)

USP Papain RS
.

USP Papaverine Hydrochloride RS
.

USP Parachlorophenol RS.
Click to View Structure

USP Paramethasone Acetate RS
.

USP Paraffin RS.

USP Parbendazole RS
Click to View Structure .

USP Paricalcitol RS.
Click to View Structure

USP Paricalcitol Solution RS.

USP Paromomycin Sulfate RS
.

USP Paroxetine Hydrochloride RS
Click to View Structure .

USP Paroxetine Related Compound B RS
Click to View Structure [trans-4-phenyl-3-[(3,4-methylenedioxy)phenoxy]methylpiperidine hydrochloride] .

USP Paroxetine Related Compound C RS
Click to View Structure [(+)-trans-paroxetine hydrochloride] .

USP Paroxetine Related Compound E Mixture RS
Click to View Structure [paroxetine hydrochloride spiked with 1-methyl-4-(p-fluorophenyl)-1,2,3,6-tetrahydropyridine] .

USP Paroxetine Related Compound F RS
Click to View Structure [trans(–)-1-methyl-3-[1,3-benzodioxol-5-yloxy)methyl]-4-(fluorophenyl)piperidine] (C20H22FNO3 343.39) .

USP Paroxetine Related Compound G RS
Click to View Structure [(±)trans-3-[(1,3-benzodioxol-5-yloxy)methyl]-4-(4¢¢-fluorophenyl-4¢-phenyl)piperidine hydrochloride] (C25H24FNO3 405.46) .

USP Paroxetine System Suitability Mixture A RS
—Mixture of approximately 1% paroxetine related compound A [piperidine, 3-[(1,3-benzodioxol-5-yloxy)methyl]-4-(4-methoxyphenyl)-, hydrochloride (3 S-trans); and 1% of paroxetine related compound B [piperidine, 3-[(1,3-benzodioxol-5-yloxy)methyl]-4-phenyl)-, hydrochloride (3 S-trans)]] in a matrix of paroxetine hydrochloride.

USP Parthenolide RS
.

USP Particle Count RS (2 blanks and 2 suspensions)
.

USP Penbutolol Sulfate RS
.

USP Penicillamine RS
Click to View Structure .

USP Penicillamine Disulfide RS
Click to View Structure (C10H20N2O4S2) .

USP Penicillin G Benzathine RS
.

USP Penicillin G Potassium RS
.

USP Penicillin G Procaine RS
.

USP Penicillin G Sodium RS
.

USP Penicillin V RS
Click to View Structure .

USP Penicillin V Potassium RS
.

USP Pentazocine RS
Click to View Structure .

USP Pentetic Acid RS
Click to View Structure .

USP Pentobarbital RS
Click to View Structure .

USP Pentoxifylline RS
Click to View Structure .

USP Perflubron RS
Click to View Structure .

USP Pergolide Mesylate RS
.

USP Pergolide Sulfoxide RS
Click to View Structure [(8)-8-[(methylsulfinyl)methyl]-6-propyl-d-ergoline] .

USP Perphenazine RS
Click to View Structure .

USP Perphenazine Sulfoxide RS
Click to View Structure .

USP Phenacetin Melting Point RS
Click to View Structure .

USP Phenazopyridine Hydrochloride RS
.

USP Phendimetrazine Tartrate RS
.

USP Phenelzine Sulfate RS
.

USP Pheniramine Maleate RS
.

USP Phenmetrazine Hydrochloride RS
.

USP Phenobarbital RS
Click to View Structure .

USP Phenol RS.
Click to View Structure

USP Phenoxybenzamine Hydrochloride RS
.

USP Phenoxyethanol RS
[2-phenoxyethanol] .

USP Phensuximide RS
Click to View Structure .

USP Phentermine Hydrochloride RS
.

USP Phentolamine Mesylate RS
.

USP l-Phenylalanine RS
Click to View Structure .

USP Phenylbenzimidazole Sulfonic Acid RS
Click to View Structure .

USP Phenylbutazone RS
Click to View Structure .

USP Phenylephrine Hydrochloride RS
.

USP Phenylethyl Alcohol RS
Click to View Structure (C8H10O 122.17).

USP 5-Phenylhydantoin RS
Click to View Structure .

USP Phenylpropanediol RS
Click to View Structure [1-phenyl-1,2-propanediol] (C9H12 O2 152.19) .

USP Phenylpropanolamine Bitartrate RS
.

USP Phenylpropanolamine Hydrochloride RS
.

USP Phenyltoloxamine Citrate RS
Click to View Structure .

USP Phenyltoloxamine Related Compound A RS
Click to View Structure [2-(2-benzylphenoxy)ethylmethylamine hydrochloride] (C16H19NO·HCl 277.79) .

USP Phenytoin RS
Click to View Structure .

USP Phenytoin Related Compound A RS
Click to View Structure [diphenylglycine] (C14H15NO2 227.26) .

USP Phenytoin Related Compound B RS
Click to View Structure [diphenylhydantoic acid] (C15H14N2O3 270.29) .

USP Phenytoin Sodium RS
.

USP Cultured Rat Pheochromocytoma Reference Photomicrographs VRS.

USP Phosphated Riboflavin RS
.

USP Physostigmine Salicylate RS
.

USP Phytonadione RS
Click to View Structure .

USP Pilocarpine RS
Click to View Structure .

USP Pilocarpine Hydrochloride RS
.

USP Pilocarpine Nitrate RS
.

USP Pimozide RS
Click to View Structure .

USP Pindolol RS
Click to View Structure .

USP Piperacillin RS
Click to View Structure .
Add the following:

USP Piperazine Adipate RS.
USP32
Add the following:

USP Piperazine Dihydrochloride RS.
USP32
Add the following:

USP Piperazine Phosphate RS.
USP32

USP Piroxicam RS
Click to View Structure .

USP Plicamycin RS
Click to View Structure .

USP Polacrilex Resin RS
Click to View Structure .

USP Polacrilin Potassium RS
.

USP Poloxamer Liquid RS.
Click to View Structure

USP Poloxamer Solid RS.
Click to View Structure

USP Poloxalene RS
.

USP Polydimethylsiloxane RS
Click to View Structure .

USP High-Density Polyethylene RS
.
Add the following:

USP Polyethylene Glycol 3350 RS.
USP32

USP Polyethylene Oxide RS
Click to View Structure .

USP Low-Density Polyethylene RS
.

USP Polyethylene Terephthalate RS
.

USP Polyethylene Terephthalate G RS
.

USP Polyisobutylene RS.

USP Polymyxin B Sulfate RS
.

USP Polyoxyl 20 Cetostearyl Ether RS.

USP Polyoxyl 10 Oleyl Ether RS.

USP Polyoxyl 10 Stearyl Ether RS.

USP Polyoxyl 35 Castor Oil RS
.

USP Polyoxyl 40 Stearate RS
Click to View Structure .

USP Polyoxyl Lauryl Ether RS.
Click to View Structure

USP Polyoxyl Oleate RS.
Add the following:

USP Polyvinyl Alcohol RS.
USP32

USP Posterior Pituitary RS
.

USP Potassium Gluconate RS
.

USP Potassium Guaiacolsulfonate RS
Click to View Structure .

USP Potassium Perchlorate RS.

USP Potassium Sucrose Octasulfate RS
Click to View Structure [note—Sucrosofate Potassium is USAN] [-d-glucopyranoside, 1,3,4,6-tetra-O-sulfo--d-fructofuranosyl, tetrakis (hydrogen sulfate), octapotassium salt, heptahydrate] (C12H14K8O35S8·7H2O 1413.64 CAS-76578-81-9). (anhydrous C12H14K8O35S8 1287.53 CAS-73264-44-5) .

USP Potassium Trichloroammineplatinate RS
Click to View Structure (Cl3H3KNPt 357.58) .

USP Pralidoxime Chloride RS
Click to View Structure .

USP Pramoxine Hydrochloride RS
.

USP Pravastatin Sodium RS.
Click to View Structure

USP Pravastatin Related Compound A RS
Click to View Structure [3--hydroxyisocompactin] or [sodium (3R,5R)-3,5-dihydroxy-7-[(1S,2S,3S,8S,8aR)-3-hydroxy-2-methyl-8-[[(2S)-2-methylbutanoyl]oxy]-1,2,3,7,8,8a-hexahydronaphthalen-1-yl]heptanoate] (C23H35NaO7 446.51).

USP Pravastatin Related Compound B RS
Click to View Structure [6¢-epi-pravastatin] or [sodium (3R,5R)-3,5-dihydroxy-7-[(1S,2S,6R,8S,8aR)-6-hydroxy-2-methyl-8-[[(2S)-2-methylbutanoyl]oxy]-1,2,6,7,8,8a-hexahydronaphthalen-1-yl]heptanoate] (C23H35NaO7 446.51).

USP Pravastatin 1,1,3,3-Tetramethylbutylamine RS.

USP Praziquantel RS
Click to View Structure .

USP Praziquantel Related Compound A RS
Click to View Structure [2-benzoyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino [2,1-a]isoquinolin-4-one] (C19H18N2O2 306.37) .

USP Praziquantel Related Compound B RS
Click to View Structure [2-(cyclohexylcarbonyl)-2,3,6,7-tetrahydro-4H-pyrazino [2,1-a]isoquinolin-4-one] (C19H22N2O2 310.40) .

USP Praziquantel Related Compound C RS
Click to View Structure [2-(N-formylhexahydrohippuroyl-1,2,3,4-tetrahydroisoquinolin-1-one] (C19H22N2O4 342.39) .

USP Prazosin Hydrochloride RS
.

USP Prednicarbate RS
Click to View Structure .

USP Prednicarbate Related Compound A RS
Click to View Structure [1,2-dihydroprednicarbate] .

USP Prednicarbate Related Compound B RS
Click to View Structure [prednisolone-17-ethylcarbonate] .

USP Prednicarbate Related Compound C RS
Click to View Structure [prednisolone-21-propionate] .

USP Prednisolone RS
Click to View Structure .

USP Prednisolone Acetate RS
.

USP Prednisolone Hemisuccinate RS
Click to View Structure .

USP Prednisolone Tebutate RS
Click to View Structure .

USP Prednisone RS
Click to View Structure .

USP Prednisone Tablets RS (Dissolution Calibrator, Disintegrating)
.

USP Prilocaine Hydrochloride RS
Click to View Structure .

USP Prilocaine RS.
Click to View Structure

USP Prilocaine Related Compound A RS
Click to View Structure [o-toluidine hydrochloride] (CH3C6H4NH2HCl 143.62 CAS-636-21-5) .

USP Prilocaine Related Compound B RS
Click to View Structure [(RS)-N-(4-methylphenyl)-2-(propylamino)propanamide] (C13H20N2O 220.31) .

USP Primaquine Phosphate RS
.

USP Primidone RS
Click to View Structure .

USP Probenecid RS
Click to View Structure .

USP Probucol RS
Click to View Structure .

USP Probucol Related Compound A RS
Click to View Structure [2,2¢,6,6¢-tetra-tert-butyldiphenoquinone] (C28H40O2 408.63) .

USP Probucol Related Compound B RS
Click to View Structure [4,4¢-(dithio)bis(2,6-di-tert-butylphenol)] (C28H42O2 474.78) .

USP Probucol Related Compound C RS
Click to View Structure [4-[(3,5-di-tert-butyl-2-hydroxyphenylthio)isopropylidenethio]-2,6-di-tert-butylphenol] (C31H48O2S2 516.86) .

USP Procainamide Hydrochloride RS
.

USP Procaine Hydrochloride RS
.

USP Procarbazine Hydrochloride RS
.

USP Prochlorperazine Maleate RS
.

USP Procyclidine Hydrochloride RS
.

USP Progesterone RS
Click to View Structure .

USP l-Proline RS
.

USP Promazine Hydrochloride RS
.

USP Promethazine Hydrochloride RS
.

USP Propafenone Hydrochloride RS
.

USP 2-Propanol RS.
Click to View Structure

USP Propantheline Bromide RS
.

USP Propantheline Bromide Related Compound A RS
Click to View Structure [9-hydroxypropantheline bromide] (C23H30BrNO4 464.39) .

USP Proparacaine Hydrochloride RS
Click to View Structure .

USP Propofol RS
Click to View Structure .

USP Propofol Related Compound A RS
Click to View Structure [3,3¢-5,5¢-tetraisopropyldiphenol] .

USP Propofol Related Compound B RS
Click to View Structure [2,6-diisopropylbenzoquinone] .

USP Propofol Related Compound C RS
Click to View Structure [2,6-diisopropylphenylisopropyl ether] (C14H22O 206.32) .

USP Propofol Resolution Mixture RS
Click to View Structure [propofol and 2-isopropyl-6-n-propylphenol].

USP Propoxycaine Hydrochloride RS
.

USP Propoxyphene Hydrochloride RS
.

USP Propoxyphene Napsylate RS
.

USP Propoxyphene Related Compound A RS
Click to View Structure [a-d-4-dimethylamino-1,2-diphenyl-3-methyl-2-butanol hydrochloride] (C19H25NO·HCl 319.87) .

USP Propoxyphene Related Compound B RS
Click to View Structure [-d-2-Acetoxy-4-dimethylamino-1,2-diphenyl-3-methylbutane] (C21H27NO2 325.45) .

USP Propranolol Hydrochloride RS
.

USP Propylene Carbonate RS
Click to View Structure .

USP Propylene Glycol RS
Click to View Structure .

USP Propylene Glycol Dicaprylate/Dicaprate RS.

USP Propylene Glycol Dilaurate RS.

USP Propylene Glycol Monocaprylate Type I RS.

USP Propylene Glycol Monocaprylate Type II RS.

USP Propylene Glycol Monolaurate RS.

USP Propyl Gallate RS
.

USP Propylparaben RS
Click to View Structure .

USP Propylthiouracil RS
Click to View Structure .

USP Prostaglandin A1 RS
Click to View Structure .

USP Prostaglandin B1 RS
Click to View Structure (C20H32O4 336.47) .

USP Protein A RS
(C1995H3163N597O697S3 46,760).

USP rProtein A RS
(C1917H3039N565O658S3 44,618).

USP rProtein A, B4, C-Cys RS
(C1177H1854N326O384S1 26,747.6).

USP rProtein A, C-Cys RS
(C1478H2320N432O503S4 34,317.5).

USP Protriptyline Hydrochloride RS
.

USP Pseudoephedrine Hydrochloride RS
.

USP Pseudoephedrine Sulfate RS
.

USP Pyrantel Pamoate RS
.

USP Pyrazinamide RS
Click to View Structure .

USP Pyrethrum Extract RS.

USP Pyridostigmine Bromide RS
.

USP Pyridoxine Hydrochloride RS
.

USP Pyrilamine Maleate RS
.

USP Pyrimethamine RS
Click to View Structure .

USP Pyrvinium Pamoate RS
Click to View Structure .