Riboflavin 5′-monophosphate sodium salt hydrate ≥95% (HPLC)

Riboflavin 5′-phosphate sodium salt hydrate meets USP testing specifications

Riboflavin European Pharmacopoeia (EP) Reference Standard

Riboflavin Impurity A Pharmaceutical Secondary Standard; Certified Reference Material

Riboflavin Pharmaceutical Secondary Standard; Certified Reference Material

Riboflavin sodium phosphate European Pharmacopoeia (EP) Reference Standard

Riboflavin sodium phosphate for peak identification CRS, European Pharmacopoeia (EP) Reference Standard

Riboflavin Sodium Phosphate Hydrate tested according to Ph. Eur.

Riboflavin United States Pharmacopeia (USP) Reference Standard

Riboflavin-(dioxopyrimidine-¹³C₄,¹⁵N₂) ≥98 atom %, ≥97% (CP)

Ribonuclease A from bovine pancreas (Solution of 50% glycerol, 10mM Tris-HCL pH 8.0)

Ribonuclease A from bovine pancreas Molecular Biology, ≥70 Kunitz units/mg protein, lyophilized

Ribonuclease A from bovine pancreas Type I-A, powder, ≥60% RNase A basis (SDS-PAGE), ≥50 Kunitz units/mg protein

Ribonuclease A from bovine pancreas Type I-AS, 50-100 Kunitz units/mg protein

Ribonuclease A from bovine pancreas Type II-A, ≥60% (SDS-PAGE), >= 60 Kunitz units/mg protein

Ribonuclease A from bovine pancreas Type III-A, ≥85% RNase A basis (SDS-PAGE), 85-140 Kunitz units/mg protein

Ribonuclease A from bovine pancreas Type XII-A, ≥90% (SDS-PAGE), 75-125 Kunitz units/mg protein

Ribonuclease B from bovine pancreas BioReagent, ≥50 Kunitz units/mg protein, ≥80% (SDS-PAGE)

Ribonuclease H (RNase H) from Escherichia coli H 560 pol A1

Ribonuclease inhibitor human Inhibits ribonucleases during transcription and translation experiments

Ribonuclease Inhibitor recombinant, expressed in E. coli, 20-40 units/μL

Ribonuclease T₁ from Aspergillus oryzae ammonium sulfate suspension, 300,000-600,000 units/mg protein

Ribonucleic acid diethylaminoethanol salt Type IX

Ribonucleic acid European Pharmacopoeia (EP) Reference Standard

Ribonucleic acid from baker’s yeast (S. cerevisiae)

Ribonucleic acid from Torula utilis Mᵣ 5000-8000

Ribonucleic acid from torula yeast core, Type II-C

Ribonucleic acid from torula yeast Type VI

Ribonucleic acid, transfer from baker’s yeast (S. cerevisiae) buffered aqueous solution

Ribonucleic acid, transfer from baker’s yeast (S. cerevisiae) buffered aqueous solution

Ribonucleic acid, transfer from baker’s yeast (S. cerevisiae) Type X-SA, lyophilized powder

Ribonucleic acid, transfer from Escherichia coli Type XX, Strain W, lyophilized powder

Ribonucleoside Triphosphate Set pkg of 4 × 200 μL (4 x 20 μmol; 100 mM, each), suitable for DNA sequencing, >98% (HPLC)

Ribonucleoside vanadyl complexes 200 mM

Ribose Pharmaceutical Secondary Standard; Certified Reference Material

Rice flour (amylose, high level) BCR®, certified reference material

Rice flour (amylose, low level) BCR®, certified reference material

Rice flour (amylose, medium level) BCR®, certified reference material

Rice flour (Total As and As species) ERM®, certified reference material

Ricinoleic acid analytical standard

Ricinoleic acid ≥95%

Rifabutin >98% (HPLC), powder

Rifabutin European Pharmacopoeia (EP) Reference Standard

Rifabutin Pharmaceutical Secondary Standard; Certified Reference Material

Rifabutin United States Pharmacopeia (USP) Reference Standard