Oxymetazoline hydrochloride ≥99%, solid

Oxymetazoline impurity A European Pharmacopoeia (EP) Reference Standard

Oxymetazoline Related Compound A Pharmaceutical Secondary Standard; Certified Reference Material

Oxymetholone United States Pharmacopeia (USP) Reference Standard

Oxypeucedanin phyproof® Reference Substance

Oxypurinol ≥98% (HPLC)

Oxyresveratrol ≥97.0% (HPLC)

Oxytetracycline dihydrate Assay (anhydrous basis) 95.0%-102.0%

Oxytetracycline European Pharmacopoeia (EP) Reference Standard

Oxytetracycline hydrochloride

Oxytetracycline hydrochloride European Pharmacopoeia (EP) Reference Standard

Oxytetracycline Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material

Oxytetracycline hydrochloride United States Pharmacopeia (USP) Reference Standard

Oxytetracycline hydrochloride VETRANAL®, analytical standard

Oxytetracycline Pharmaceutical Secondary Standard; Certified Reference Material

Oxytetracycline United States Pharmacopeia (USP) Reference Standard

Oxythiamine chloride hydrochloride ≥95% (HPLC)

Oxytocin

Oxytocin acetate salt hydrate ≥97% (HPLC)

Oxytocin European Pharmacopoeia (EP) Reference Standard

Oxytocin identification United States Pharmacopeia (USP) Reference Standard

Oxytocin lyophilized powder, ~15 IU/mg solid (Prepared from synthetic oxytocin)

Oxytocin United States Pharmacopeia (USP) Reference Standard

Oyster tissue NIST® SRM® 1566b

Ozone Test photometric, 0.010-4.00 mg/L (O₃), Spectroquant®

O⁶-Benzylguanine ≥98% (TLC), solid

P(Cy₃) Pd G3 97%

P(t-Bu)3 Pd G4 95%

P(t-Bu)₃ Pd G2

p,α,α-Trimethylbenzyl alcohol ≥95%, FG

p,α-Dimethylstyrene ≥98%, stabilized, FG

p-Aminobenzamidine–Agarose (1:1 suspension in a 1.0 M NaCl + 20% ethanol solution)

p-Aminohippuric acid ≥99%

p-Anisaldehyde 98%

p-Anisaldehyde analytical standard

p-Anisaldehyde primary reference standard

p-Anisaldehyde ≥97.5%, FCC, FG

p-Anisic acid ≥99%, FG

p-Anisidine 99%

p-Benzoquinone for spectrophotometric det. of amines, ≥99.5% (HPLC)

p-Benzoquinone reagent grade, ≥98%

p-Chloranil for synthesis

p-Chloroaniline Pharmaceutical Secondary Standard; Certified Reference Material

p-Chloroaniline United States Pharmacopeia (USP) Reference Standard

P-Chlorodiphenylphosphine 99%