• R,7R,7aR,8aS)-
• 179233-83-1
• C₂₉H₄₂O₇
• 502.63958
• .

• Reductase, tropinone
• 82532-89-6
• .

• Rheumopyrin
• 8066-94-2
• .

• RS 17
• 8066-54-4
• .

• Rokryl SU 25
• 25776-32-3
• .

• Restriction endonuclease sau3ai
• 133135-99-6
• .

• Rifamycin XIV
• 62796-35-4
• .

• Retinal,3,4-didehydro-,11-cis-
• 41470-05-7
• .

• Rosin, polymer with maleic anhydride and safflower oil
• 68152-75-0
• .

• Resin acids and Rosin acids, zinc salts, polymers with formaldehyde, glycerol, heavy thermal cracked naphtha, phenol and rosin
• 70248-20-3
• .

• Rhamnorobin
• 5041-74-7
• .

• Rhenium, pentacarbonylsilyl-
• 40628-33-9
• C₇H₁₅
• 99.194
• .

• Rubomycin, hydrochloride
• 62112-36-1
• C₁₀H₂₀O
• 156.2652
• .

• R-Erythro-taxotere
• 133577-32-9
• .

• Rd 802
• 8066-13-5
• .

• Rongalite FD
• 8065-69-8
• .

• RJR 2429
• 91556-75-1
• .

• Residues, shale oil, hydrocracked, hydrodesulfurized atm. tower
• 195459-59-7
• .

• RU 47010
• 131711-53-0
• C₁₁H₁₄N₂O₄S
• 270.30486
• .

• Resibufogenin 3-sulfate
• 72093-17-5
• .

• Rhodalgisin
• 72063-38-8
• .

• Rhodalgiside
• 72063-37-7
• .

• RU 21731
• 71096-61-2
• .

• Rosin, tall oil pitch, sodium salts
• 71010-95-2
• .

• Rosin, polymer with pentaerythritol, phthalic anhydride, sorbital and tall oil
• 70984-07-5
• .

• Ristomycin A aglycone, 22, 31-dichloro-38-[(decahydro-1-isoquinolinyl)carbonyl]-38-de(methoxycarbonyl)-7-demethyl-19-deoxy-
• 564461-72-9
• C₆₇H₆₀Cl₂N₈O₁₇
• 1320.1427
• .

• Ristomycin A aglycone, 22, 31-dichloro-7-demethyl-64-O-demethyl-19-deoxy-N15-((9H-fluoren-9-ylmethoxy)carbonyl)-
• 562105-35-5
• C₇₃H₅₅Cl₂N₇O₂₀
• 1421.1587
• .

• RA 2 (pharmaceutical)
• 55819-65-3
• .

• RU 40066
• 194413-71-3
• .

• Rosin, polymer with acetic acid p-tert-butylphenol, formaldehyde and phenol, calcium salt
• 193098-45-2
• .

• Rosin, fumarated, polymer with phthalic anhydride and sorbitol
• 70955-46-3
• .

• Ro 31-0602
• 82249-23-8
• .

• Receptor, epidermal growth factor (human protein moiety reduced)
• 91386-87-7
• C₁₁H₂₂ClN
• 203.75208
• .

• Rosin, maleated, polymer with dicyclopentadiene
• 192888-66-7
• .

• Rosin, polymer with benzoic acid, bisphenol A, p-tert-butylphenol, ethylene glycol, formaldehyde, pentaerythritol, phthalic anhydride and soybean oil
• 192726-59-3
• .

• Romacril TRHI 32
• 31425-80-6
• Cl₅Si₂
• 233.436
• .

• R 13906
• 35461-18-8
• .

• RU 22157
• 62657-87-8
• .

• Rifamycin,3,3'-[(1,2-diphenyl-1,2- ethanediylidene)bis(azinomethylidyne)]bis-
• 52395-70-7
• .

• Rheo 3000
• 211618-74-5
• .

• Reductoisomerase
• 9075-02-9
• .

• RU 85
• 71567-43-6
• .

• Ro 03-5939
• 71562-64-6
• .

• Rubbing alcohol
• 8003-15-4
• C₃H₈O
• 60.09502
• .

• Robuden
• 8002-15-1
• C₂₃H₃₂O₆
• 404.49658
• .

• Raddeanin E
• 94359-16-7
• .

• reduced)
• 62079-80-5
• .

• RX 811054
• 94342-75-3
• .

• Rotundioside E
• 73548-39-7
• .

• Retroresinolide
• 3571-40-2
• .