• Reductase, 4-oxoproline
• 37250-37-6
• .

• Reductase,2-ketoadipate (9CI)
• 61116-21-0
• .

• Radon, isotope of mass224
• 28522-22-7
• Rn
• 224
• .

• Rutile, tin zinc
• 85536-73-8
• 287-559-6
• .

• Ribose,3-deoxy-3-(N-methylacetamido)-, hydrate, 1,1,2,4,5-pentaacetate, D- (8CI)
• 25787-53-5
• C18H27 N O11
• 433.4071
• .

• Riboflavin, 6-amino-(9CI)
• 73652-55-8
• C17H21 N5 O6
• 0
• .

• Rhodium carbide (RhC2)(9CI)
• 37306-47-1
• C2Rh
• 127.93484
• .

• Rubber, natural, Memethacrylate-and styrene-grafted
• 140678-15-5
• .

• Reductase, mannuronate
• 37250-62-7
• .

• Rhodocidin (8CI)
• 1393-10-8
• .

• Rhodium, bis(h2-ethene)(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato-kO,kO')- (9CI)
• 55188-59-5
• C9H9 F6 O2 Rh
• 363.27592
• .

• Resin acids, iridiumsalts
• 97489-09-3
• 307-048-4
• .

• Rhodium,bis(3-chloro-2,4-pentanedionato-kO,kO')(2,4-pentanedionato-kO,kO')-, (OC-6-21)- (9CI)
• 66060-25-1
• C15H19 Cl2 O6 Rh
• 472.1431
• .

• Rubradirin B,4''-[(2,3,6-trideoxy-3-C-methyl-4-O-methyl-3-nitroso-a-D-xylo-hexopyranosyl)oxy]-,(7Z)- (9CI)
• 122525-61-5
• C48H46 N4 O19
• 0
• .

• Rifamycin,3-[[(4-methyl-1-piperazinyl)oxidoimino]methyl]-
• 51963-55-4
• C43H58 N4 O13
• 0
• .

• Rhodium,bis(nitrato-O)nitrosylbis(triphenylphosphine)- (9CI)
• 60284-34-6
• C36H30 N3 O7 P2 Rh
• 783.508202 [g/mol]
• .

• Riboflavin, 2-thio-(9CI)
• 17065-60-0
• C17H20 N4 O5 S
• .

• Rifamycin W,20-demethyl-20-ethyl- (9CI)
• 157049-51-9
• C36H47 N O11
• 0
• .

• Residues,copper-refining
• 124222-16-8
• 0
• .

• Rifamycin,3,3'-[(1,3-dioxo-1,3-propanediyl)bis(2-hydrazinyl-1-ylidenemethylidyne)]bis-(9CI)
• 51707-29-0
• C79H98 N6 O26
• 1547.64802 [g/mol]
• .

• Resin acids and Rosinacids, cerium(3+) salts
• 91081-19-5
• 293-621-3
• .

• Reboul cocktail (9CI)
• 117706-64-6
• 0
• .

• Resin acids and Rosinacids, calcium salts, polymers with bisphenol A, formaldehyde, glycerol,linseed oil, pentaerythritol, phenol, polymd. linseed oil, rosin and tung oil
• 192888-63-4
• .

• Reductase, orotate(reduced nicotinamide adenine dinucleotide phosphate)
• 37255-27-9
• .

• Rhenocene, decamethyl-(9CI)
• 98814-97-2
• C20H30 Re
• 456.6592
• .

• Reductase,aquacobalamin (reduced nicotinamide adenine dinucleotide phosphate) (9CI)
• 110777-32-7
• .

• Resin acids,ethoxylated propoxylated
• 68187-98-4
• .

• Rhenium, [(1,2,3-h)-2-butenyl]tetracarbonyl-,stereoisomer (9CI)
• 84519-43-7
• C8H7 O4 Re
• 193.32842
• .

• Ruthenium(2+),tris(2,2'-bipyrazine-kN1,kN1')-, (OC-6-11)-
• 75523-96-5
• C24H18 N12 Ru
• 575.549
• .

• Rikemal CS 200
• 37348-65-5
• C₂₁H₃₆O₅
• 0
• .

• Rifamycin,3-[(propylamino)methyl]- (9CI)
• 63624-39-5
• C41H56 N2 O12
• 768.8895
• .

• Ruthenium, isooctylmercaptoacetate complexes
• 90552-49-1
• 292-173-6
• .

• Rumex acetosa, ext.
• 90106-39-1
• 290-261-9
• .

• Ruthenium,(dipyrido[3,2-a:2',3'-c]phenazine-kN4,kN5)bis[5-oxo-5-[(1,10-phenanthrolin-5-yl-kN1,kN10)amino]pentanoato]-, conjugate diacid, (OC-6-22)-(9CI)
• 152204-36-9
• C52H38 N10 O6 Ru . 2 H
• 0
• .

• Rifamycin,1,4-dideoxy-1,4-dihydro-30-hydroxy-1,4-dioxo-
• 59264-04-9
• C37H45 N O13
• 0
• .

• Ro 40-2148
• 138341-94-3
• .

• Rhodium, dicarbonyl(h5-1-nitro-2,4-cyclopentadien-1-yl)-
• 75862-04-3
• C7H4 N O4 Rh
• 443.4922
• .

• Residues (coal tar),creosote oil distn.
• 92061-93-3
• 295-506-3
• .

• Raffinates,steam-cracked C4 fraction acid extn., distn. residues
• 92201-82-6
• 296-013-6
• .

• Riboflavin5'-(trihydrogen diphosphate), 4a,5-dihydro-4a-hydroxy-, P'®5'-ester with adenosine (9CI)
• 96622-00-3
• C27H35 N9 O16 P2
• 0
• .

• Ribitol,1-(6-amino-3,4-xylidino)-1-deoxy-, monohydrochloride (8CI)
• 5445-03-4
• C13H22 N2 O4 . Cl H
• 270.3248
• .

• Ribitol,1,1-bis(benzoylamino)-1-deoxy-
• 21967-71-5
• C19H22 N2 O6
• .

• Rifamycin,3-[[(hexahydro-1(2H)-azocinyl)imino]methyl]- (9CI)
• 53219-24-2
• C45H61 N3 O12
• .

• Rhubarb, Rheumofficinale, hybrid with Rheum palmatum, ext.
• 97043-80-6
• 306-329-9
• .

• Rubidium, isotope ofmass 106
• 15438-27-4
• Rb
• 85.4678
• .

• Rutile, antimony yelloworange
• 95193-93-4
• 305-908-3
• .

• Resins, sagapenum
• 93165-70-9
• 296-957-9
• .

• Resin acids and Rosinacids, polymd., cerium salts
• 71011-06-8
• 0
• .

• Radon, isotope of mass218
• 15411-71-9
• Rn
• 218
• .

• Rhodium, tetrakis[m-(pentanoato-kO:kO')]di-, (Rh-Rh)
• 62728-88-5
• C20H36 O8 Rh2
• 305.15
• .