USP Reference Standards

Add the following:

USP Cabergoline RS.

USP32

USP Caffeine RS .

USP Caffeine Melting Point RS

USP Calcifediol RS .

USP Calcitonin Salmon RS.

USP Calcitonin Salmon Related Compound A RS

[N-acetyl-cys1-calcitonin] (C146H243N44O49S2

3463).

USP Calcitriol RS

USP Calcitriol Solution RS

USP Calcium Ascorbate RS

USP Calcium Gluceptate RS

USP Calcium Lactate RS.

USP Calcium Lactobionate RS

USP Calcium Pantothenate RS .

USP Calcium Saccharate RS .

USP Candelilla Wax RS .

USP Capecitabine RS.

USP Capecitabine Related Compound A RS.

USP Capecitabine Related Compound B RS.

USP Capecitabine Related Compound C RS.

USP Capreomycin Sulfate RS .

USP Caprylic Acid RS.

USP Caprylocaproyl Polyoxylglycerides RS .

USP Capsaicin RS

USP Captopril RS

USP Captopril Disulfide RS

USP Carbachol RS

USP Carbamazepine RS

USP Carbamazepine Related Compound A RS

[10, 11-dihydrocarbamazepine].

USP Carbamazepine Related Compound B RS

[iminostilbene].

USP Carbenicillin Indanyl Sodium RS

USP Carbenicillin Monosodium Monohydrate RS .

USP Carbidopa RS .

USP Carbidopa Related Compound A RS

[3-O-methylcarbidopa] (C11H16N2O4

240.26) .

USP Carbinoxamine Maleate RS .

USP Urea C 13 RS

USP Carboplatin RS

USP Carboprost Tromethamine RS.

USP Carisoprodol RS

USP Carprofen RS.

USP Carprofen Related Compound A RS

[carbazole] (C12H9N

167.21).

USP Carteolol Hydrochloride RS .

USP Carvedilol RS.

USP Carvedilol Related Compound A RS

[1-[[9-[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propyl]-9H-carbazol-4-yl]oxy]-3-[[2-(2-methoxyphenoxy)ethyl]amino]propan-2-ol] .

USP Carvedilol Related Compound B RS

[1,1¢-[[2-(2-methoxyphenoxy)ethyl]nitrilo]bis[3-(9H-carbazol-4-yloxy)propan-2-ol] .

USP Carvedilol Related Compound C RS

[(2RS)-1-[benzyl[2-(2-methoxyphenoxyethyl]amino]-3-(9H-cabazol-4-yloxy)propan-2-ol] .

USP Carvedilol Related Compound D RS

[4-(2,3-epoxypropoxy)carbazole] .

USP Carvedilol Related Compound E RS

[2-(2-methoxyphenoxy)ethylamine] .

USP Casticin RS .

USP Powdered Cat's Claw Extract RS.

USP Cathinone Hydrochloride RS [

-aminopropiophenone hydrochloride] (C9H11NO·HCl

185.65) .

USP Cefaclor RS .

USP Cefaclor Delta-3 Isomer RS

USP Cefadroxil RS

USP Cefamandole Lithium RS .

USP Cefamandole Nafate RS .

USP Cefazolin RS

Add the following:

USP Cefdinir RS .

USP32

Add the following:

USP Cefdinir Related Compound A RS [(2R)-2-[(Z)-2-(2-aminothiazol-4-yl)-2-(hydroxyimino)acetamido]-2-[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]acetic acid (other three stereo isomers are also present in this RS)] (C14H15N5O6S2

413.43).

USP32

Add the following:

USP Cefdinir Related Compound B RS [(6R,7R)-7-[2-(2-amino-4-thiazolyl)acetamido]-8-oxo-3-vinyl-5-thia-1-azabicyclo](4.2.0)]oct-2-ene-2-carboxylic acid] (C14H13N4O4S2

365.41).

USP32

USP Cefepime Hydrochloride RS

USP Cefepime Hydrochloride System Suitability RS— This is a mixture of cefepime hydrochloride related compound A ([6R-[6

(E)]]-1-[[7-[[(2-amino-4-thiazolyl) (methoxyimino)acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-1-methylpyrrolidinium chloride, monohydrochloride, monohydrate; (C19H25ClN6O5S2·HCl·H2O

571.50); cefepime related compound B ([6R-trans]-7-[[[2-[[(2-amino-4-thiazolyl)(methoxyimino)acetyl]amino]-4-thiazolyl](methoxyimino)acetyl]amino]-3-(1-methylpyrrolidinium-1-yl)methyl]-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid, inner salt; (C25H29N9O7S3

663.75); and cefepime hydrochloride.

USP Cefixime RS

USP Cefmenoxime Hydrochloride RS .

USP Cefmetazole RS

USP Cefonicid Sodium RS

USP Cefoperazone Dihydrate RS

USP Ceforanide RS

USP Cefotaxime Sodium RS .

USP Cefotetan RS

USP Cefotiam Hydrochloride RS .

USP Cefoxitin RS

USP Cefpiramide RS

USP Cefpodoxime Proxetil RS .

USP Cefprozil (E)-Isomer RS

USP Cefprozil (Z)-Isomer RS

USP Ceftazidime Delta-3-Isomer RS

USP Ceftazidime Pentahydrate RS

USP Ceftizoxime RS

USP Ceftriaxone Sodium RS .

USP Ceftriaxone Sodium E-Isomer RS

USP Cefuroxime Axetil RS .

USP Cefuroxime Axetil Delta-3 Isomers RS

USP Cefuroxime Sodium RS

USP Cellaburate RS .

USP Cellacefate RS .

USP F1 Cells for Cell Proliferation Test RS (ATCC cell line FDCP-F1 shipped with approval from USP).

USP Cellulose Acetate RS .

USP Cephaeline Hydrobromide RS

USP Cephalexin RS .

USP Cephalothin Sodium RS .

USP Cephapirin Benzathine RS

USP Cephapirin Sodium RS .

USP Cephradine RS

USP Cetyl Alcohol RS .

USP Cetyl Palmitate RS

USP Cetylpyridinium Chloride RS .

USP Chlorambucil RS

USP Chloramphenicol RS

USP Chloramphenicol Palmitate RS

USP Chloramphenicol Palmitate Nonpolymorph A RS .

USP Chloramphenicol Palmitate Polymorph A RS .

USP Chlordiazepoxide RS

USP Chlordiazepoxide Related Compound A RS

[7-chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one 4-oxide] (C15H11ClN2O2

286.72) .

USP Chlordiazepoxide Hydrochloride RS .

USP Chlorhexidine RS

USP Chlorhexidine Acetate RS .

USP Chlorhexidine Related Compounds RS .

USP Chlorobutanol RS .

USP 2-Chloro-3,5-dimethylphenol RS

(C8H9ClO

156.61) .

USP Chlorogenic Acid RS.

USP

-Chlorogenin RS .

USP Chlorophyllin Copper Complex Sodium RS.

USP Chloroprocaine Hydrochloride RS .

USP Chloroquine Phosphate RS .

USP Chlorothiazide RS

USP Chloroxylenol RS

USP Chloroxylenol Related Compound A RS

[2-chloro-3,5-dimethylphenol] .

USP Chlorpheniramine Extended-Release Tablets RS (Drug Release Calibrator, Single Unit) .

USP Chlorpheniramine Maleate RS .

USP Chlorpromazine Hydrochloride RS .

USP Chlorpropamide RS

USP (E)-Chlorprothixene RS

USP Chlortetracycline Hydrochloride RS

USP Chlorthalidone RS

USP Chlorthalidone Related Compound A RS

[4¢-Chloro-3¢-sulfamoyl-2-benzophenone carboxylic acid] .

USP Chlorzoxazone RS

USP Chlorzoxazone Related Compound A RS [2-amino-4-chlorophenol] (C6H6ClNO

143.57) .

USP Cholecalciferol RS

USP D4,6-Cholestadienol RS [cholesta-4,6-dien-3

-ol]

(C27H44O

384.64) .

USP Cholesteryl Caprylate RS

(C35H60O2

512.86) .

USP Cholestyramine Resin RS .

USP Choline Bitartrate RS .

USP Choline Chloride RS .

USP Chondroitin Sulfate Sodium RS .

USP Chromium Picolinate RS

USP Chymotrypsin RS .

USP Ciclopirox RS

USP Ciclopirox Related Compound A RS

[3-cyclohexyl-4,5-dihydro-5-methyl-5-isoxazolyl acetic acid] .

USP Ciclopirox Related Compound B RS

[6-cyclohexyl-4-methyl-2-pyrone] .

USP Ciclopirox Olamine RS .

USP Cilastatin Ammonium Salt RS

USP Cilostazol RS.

USP Cilostazol Related Compound A RS

[6-hydroxy-3,4-dihydro-1H-quinolin-2-one] (C9H9NO2

163.17) .

USP Cilostazol Related Compound B RS

[6-[4-(1-cyclohexyl-1H-tetrazol-5-yl)-butoxy]-1H-quinolin-2-one] (C20H25N5O2

367.45) .

USP Cilostazol Related Compound C RS

[1-(4-(5-cyclohexyl-1H-tetrazol-1-yl)butyl)-6-(4-(1-cyclohexyl-1H-tetrazol-5-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one] (C31H43N9O3

589.73).

USP Cimetidine RS

USP Cimetidine Hydrochloride RS .

USP Cinoxacin RS

USP Ciprofloxacin RS

USP Ciprofloxacin Ethylenediamine Analog RS

[1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-[(2-aminoethyl)amino]-3-quinolinecarboxylic acid hydrochloride] (C15H16FN3O3·HCl

341.77) .

USP Ciprofloxacin Hydrochloride RS

USP Cisplatin RS

USP Citalopram Hydrobromide RS.

USP Citalopram Related Compound A RS

[1-(3-dimethylaminopropyl)-1-(4¢-fluorophenyl)-1,3-dihydroisobenzofuran-5-carboxamide] (C20H23FN2O2

342.22).

USP Citalopram Related Compound B RS

[1-(3-dimethylaminopropyl)-1-(4-fluorophenyl)-3-hydroxy-1,3-dihydroisobenzofuran-5-carbonitrile] (C20H21FN2O2

340.22).

USP Citalopram Related Compound C RS

[3-(3-N,N-dimethylamino)-1-(4-fluorophenyl)-6-cyano-1(3H)-isobenzofuranone] (C20H19FN2O2

338.22).

USP Citalopram Related Compound D RS

[1-(4-fluorophenyl)-1-(3-(methylamino)propyl)-1,3-dihydroisobenzofuran-5-carbonitrile hydrochloride] (C19H19FN2O·HCl

346.83) .

USP Citalopram Related Compound E RS

[1-(3-dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydrobenzofuran-5-carbonitrile-N-oxide] (C20H21FN2O2

340.22).

USP Citalopram Related Compound F RS

[dimethyl-(1-methyl-3,3-diphenylallyl)amine hydrochloride] (C18H21NHCl

286.64) .

USP Citalopram Related Compound G RS

[1-(4¢-fluorophenyl)-1-(3-dimethylaminopropyl)-5-chlorophthalane hydrobromide] (C19H21FNOCl·HBr

414.74).

USP Citalopram Related Compound H RS

[1-(4¢-fluorophenyl)-1-(3-dimethylaminopropyl)-5-bromophthalane hydrobromide] (C19H21FNOBr·HBr

459.1).

USP Citric Acid RS

USP Clarithromycin RS

USP Clarithromycin Identity RS.

USP Clarithromycin Related Compound A RS

[6,11-di-O-methylerythromycin A] (C39H71NO13

762.00) .

USP Clavam-2-Carboxylate Potassium RS .

USP Clavulanate Lithium RS

USP Clemastine Fumarate RS .

USP Clidinium Bromide RS

USP Clidinium Bromide Related Compound A RS

[3-hydroxy-1-methylquinuclidinium bromide] (C8H16BrNO

222.13) .

USP Clindamycin Hydrochloride RS .

USP Clindamycin Palmitate Hydrochloride RS .

USP Clindamycin Phosphate RS .

USP Clioquinol RS

USP Clobetasol Propionate RS .

USP Clobetasol Propionate Related Compound A RS

-fluoro-11

-hydroxy-16

-methyl 3-oxo-androsta-1,4-diene-17(R)-spiro-2¢-[4¢-chloro-5¢-ethylfuran-3¢(2¢H)-one]] (C25H30ClFO4

448.96) .

USP Clocortolone Pivalate RS

USP Clofazimine RS

USP Clofibrate RS

USP Clomiphene Citrate RS .

USP Clomiphene Related Compound A RS

[(E,Z)-2-[4-(1,2-diphenylethenyl)phenoxy]-N,N-diethylethanamine hydrochloride] (C26 H29NO·HCl

407.98) .

USP Clomipramine Hydrochloride RS .

USP Clonazepam RS

USP Clonazepam Related Compound A RS

[3-amino-4-(2-chlorophenyl)-6-nitrocarbostyril] (C15H10CIN3O3

315.72) .

USP Clonazepam Related Compound B RS

[2-amino-2¢-chloro-5-nitrobenzophenone] (C13H9ClN2O3

276.68) .

USP Clonazepam Related Compound C RS

[2-bromo-2¢-(2-chlorobenzoyl)-4¢-nitroacetanilide] .

USP Clonidine RS

USP Clonidine Hydrochloride RS .

USP Clonidine Related Compound B RS

[2-[(E)-2,6-dichlorophenylimino]-1-(1-{2-[(E)-2,6-dichlorophenylimino]-imidazolidin-1-yl}ethyl)imidazolidine] (C20H20Cl4N6

486.23).

USP Clopidogrel Bisulfate RS.

USP Clopidogrel Related Compound A RS

[(+)-(S)-(o-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetic acid].

USP Clopidogrel Related Compound B RS

[methyl (±)-(o-chlorophenyl)-4,5-dihydrothieno[2,3-c]pyridine-6(7H)-acetate, hydrochloride].

USP Clopidogrel Related Compound C RS

[methyl (

)-(R)-(o-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetate, hydrogen sulfate].

USP Clorazepate Dipotassium RS .

USP Clorsulon RS

USP Clotrimazole RS

USP Clotrimazole Related Compound A RS

[(o-chlorophenyl)diphenylmethanol] (C19H15ClO

294.78) .

USP Powdered Red Clover Extract RS .

USP Cloxacillin Benzathine RS .

USP Cloxacillin Sodium RS

USP Clozapine RS

USP Clozapine Resolution Mixture RS

—Contains the following components:

Clozapine: 11, 11¢-(piperazine-1,4-diyl)bis(8-chloro-5H-dibenzo(b,e)(1,4)diazepine.

Impurity A: 8-chloro-5,10-dihydro-11H-dibenzo(b,e)(1,4)diazepin-11-one.

Impurity B: 11,11¢-(piperazine-1,4-diyl)bis(8-chloro-5H-dibenzo(b,e)(1,4)dizepine.

Impurity C: 8-chloro-11-(piperazin-1-yl)-5H-dibenzo(b,e)(1,4)diazepine.

Impurity D: 4-chloro-N1-(2-((4-methylpiperazin-1-yl)carbonyl)phenyl)benzene-1,2-diamine.

USP Cocaine Hydrochloride RS .

USP Cod Liver Oil RS.

USP Codeine N-Oxide RS

(C18H21NO4

315.37) .

USP Codeine Phosphate RS

USP Codeine Sulfate RS .

USP Powdered Black Cohosh Extract RS .

USP Colchicine RS .

USP Colestipol Hydrochloride RS .

USP Colistimethate Sodium RS .

USP Colistin Sulfate RS .

USP Copovidone RS

USP Corticotropin RS .

USP Cortisone Acetate RS .

USP Creatinine RS

USP Cromolyn Sodium RS .

USP Crospovidone RS

USP Crotamiton RS

Add the following:

USP Curcumin RS.

USP32

Add the following:

USP Curcuminoids RS.

USP32

USP Cyanidin Chloride RS.

USP Cyanidin-3-O-glucoside Chloride RS.

USP Cyanocobalamin RS

USP Cyclandelate RS

USP Cyclizine Hydrochloride RS .

USP Cyclobenzaprine Hydrochloride RS .

USP Alpha Cyclodextrin RS

USP Beta Cyclodextrin RS

USP Gamma Cyclodextrin RS.

USP Cyclomethicone 4 RS

USP Cyclomethicone 5 RS

USP Cyclomethicone 6 RS

USP Cyclopentolate Hydrochloride RS .

USP Cyclophosphamide RS .

USP 2-Cyclopropylmethylamino-5-chlorobenzophenone RS

USP Cycloserine RS

USP Cyclosporine RS

USP Cyclosporine Resolution Mixture RS [This material is a 100:1 mixture of cyclosporine and cyclosporine U.] .

USP Cyproheptadine Hydrochloride RS .

USP Cyromazine RS.

USP l-Cysteine Hydrochloride RS .

USP Cytarabine RS

USP Cytosine RS.