• RAP 2354
• 90319-83-8
• .

• r-Ketoisocaproic oxidase
• 9031-06-5
• .

• r-Ketoisocaproic decarboxylase
• 9031-00-9
• .

• r-Isopropylmalic synthetase
• 9030-98-2
• .

• Reducdyn
• 8061-59-4
• C₆H₉NO₂S
• 159.20616
• .

• Ruthenate(1-),aqua[N-[2-[bis[(carboxy-kO)- methyl]amino-kN]ethyl]-N-(carboxymethyl)- glycinato(4-)-kN,kO]-,hydrogen
• 15282-93-6
• .

• Rec 15/2800
• 152735-62-1
• .

• Rubicunoside B
• 180965-42-8
• .

• Ruthenium, tricarbonyl((1,2,3,4-eta)-1,3-cycloheptadiene)-
• 41550-67-8
• .

• Rare earth alloys
• 8049-20-5
• .

• Reptansterone
• 179308-56-6
• .

• Reductase,tartronate semialdehyde
• 9028-68-6
• .

• Reductase,hydroxymethylglutaryl coenzyme A (reduced nicotinamide adenine dinucleotide phosphate)
• 9028-35-7
• .

• Reductase,mevaldate
• 9028-33-5
• .

• Reductase,aldose
• 9028-31-3
• .

• Reductase,glucuronolactone
• 9028-30-2
• .

• Ro 7-1366
• 19947-80-9
• .

• Rosin, polymer with isophthalic acid, linoleic acid, trimellitic anhydride and trimethylolpropane
• 66071-58-7
• .

• Rosin, bisphenol A, formaldehyde, glycerine polymer
• 70248-47-4
• .

• Rosin, glycerine and pentaerythritol ester
• 70248-42-9
• .

• Rosin, glycerin, isophthalic acid, linseed oil, phthalic anhydride,soybean oil polymer
• 70248-40-7
• .

• Rohituka 5
• 70237-67-1
• .

• Rhamnulokinase
• 9030-52-8
• .

• Reductase,nitrate (reduced nicotinamide adenine dinucleotide phosphate)
• 9029-28-1
• .

• Reductase,cystine
• 9029-18-9
• .

• Reductase,orotate
• 37255-26-8
• .

• RU 50667
• 134411-74-8
• .

• Resistol E 3
• 134392-28-2
• .

• Racemase,lysine
• 9024-10-6
• .

• Retinochrome
• 9023-76-1
• .

• Rastevione
• 80388-43-8
• .

• r-Damascenone
• 35044-63-4
• .

• Residues, shale oil, hydrocracked, catalytic reformer fractionator
• 195459-57-5
• .

• Ruthenium(2 ), (N-(5H-cyclopenta(2,1-b:3,4-b)dipyridin-5-ylidene-kappaN1,kappaN9)benzenamine)bis(1,10-phenanthroline-kappaN1,kappaN10)-, (OC-6-22)-, diperchlorate
• 189754-55-0
• C41 H27 N7 Ru . 2 Cl O4
• .

• Ranatuerin 9 (reduced)
• 215715-59-6
• .

• Ranatuerin 7 (reduced)
• 215715-57-4
• .

• Ranatuerin 6 (reduced)
• 215715-56-3
• .

• Ranatuerin 5 (reduced)
• 215715-55-2
• .

• Ranatuerin 3 (reduced)
• 215715-53-0
• .

• Ranatuerin 1 (reduced)
• 215715-51-8
• .

• RMI 71858
• 65639-00-1
• .

• Reductase,21-dehydrosteroid
• 9026-76-0
• .

• Rosin, polymer with pentaerythritol and soybean oil
• 68918-82-1
• .

• Resin acids and Rosin acids, esters with pentaerythritol, polymers with 2,5-bis(1,1-dimethylpropyl)-1,4-benzenediol and rosin, zinc salts
• 68607-33-0
• .

• Ribosyltransferase
• 9023-04-5
• .

• Ruthenium, mu-carbonyltetracarbonyl(mu-(eta4-N,N-1,2-ethanediylidenebis(2,2-dimethyl-1-propanamine)-N,N))di-, (Ru-Ru)
• 90219-29-7
• C₈H₁₂N₂
• 136.19428
• .

• ROSE WATER, STRONGER
• 8030-26-0
• C₂₀H₂Cl₄I₄Na₂O₅
• 1033.642917
• .

• Raspberry syrup [USP XVIII]
• 8027-62-1
• .

• Ro 19-5470
• 176793-56-9
• .

• Ram 1
• 132396-91-9
• .