• Relaxin (Rajaerinacea-B reduced) (9CI)
• 107712-70-9
• C216H332 N66 O55 S3
• .

• Resins, asafetida
• 9000-04-8
• 232-522-1
• 0
• .

• Receptor, fibroblastgrowth factor (human clone flg-2 gene flg-2 isoform precursor reduced) (9CI)
• 144590-76-1
• 0
• .

• Ruthenium(2+),pentaammine(L-histidinato-kN3)-, conjugate monoacid, (OC-6-22)- (9CI)
• 77760-96-4
• C6H23 N8 O2 Ru . H
• 0
• .

• Rhodium,dichlorohydrotris(triphenylphosphine)-
• 12124-48-0
• C54H46 Cl2 P3 Rh
• 235-181-7
• 962.683763
• .

• Ruthenate(3-),diaquaoctachloro-m-nitridodi-,potassium (1:3)
• 30051-65-1
• Cl8H4 N O2 Ru2 . 3 K
• 250-017-4
• .

• Rhodate(3-),chlorotris[3-(diphenylphosphino-kP)benzenesulfonato]-, trihydrogen, (SP-4-2)- (9CI)
• 75813-17-1
• C54H42 Cl O9 P3 Rh S3 . 3 H
• 0
• .

• RNA formation factor(Saccharomyces cerevisiae clone pML16-2 gene GCR2) (9CI)
• 148466-69-7
• 0
• .

• Rosin,hydrogenated
• 65997-06-0
• 266-041-3
• .

• Ruthenium(2+),tris(pyrazino[2,3-f]quinoxaline-kN1,kN10)-, dichloride, (OC-6-11)-(9CI)
• 88181-59-3
• C30H18 N12 Ru . 2 Cl
• 0
• .

• Rifamycin VIII,1',4-didehydro-1-deoxy-1,4-dihydro-3'-hydroxy-5'-[4-(1-methylpropyl)-1-piperazinyl]-1-oxo-(9CI)
• 129791-94-2
• C51H64 N4 O13
• 941.0729
• .

• Ranimycin
• 11056-09-0
• C12H18 O6
• 0
• .

• Rhodium(1+), [(1,2,5,6-h)-1,5-cyclooctadiene][N-(2-pyridinylmethylene)-2-propanamine-N,N']-,chloride (9CI)
• 98716-31-5
• C17H24 N2 Rh . Cl
• 0
• .

• Rhodium(3+),[9,10-phenanthrenediaminato(2-)-kN,kN']bis(1,10-phenanthroline-kN1,kN10)-, (OC-6-21)- (9CI)
• 121174-96-7
• C38H26 N6 Rh
• 0
• .

• Resyn 25-1971
• 26660-37-7
• C₁₁H₁₆O₅
• 228.24174
• .

• Rhenium chloride(ReCl4)
• 13569-71-6
• Cl4Re
• 236-989-2
• 328.018
• .

• Ruthenate(2-),hydroxytetrakis(nitrito-kN)nitrosyl-, sodium (1:2), (OC-6-32)-
• 16482-05-6
• HN5 O10 Ru . 2 Na
• 333.115
• .

• Ristomycin A aglycone,5,31-dichloro-7-demethyl-64-O-demethyl-19-deoxy-56-O-[2-deoxy-2-[(1-oxododecyl)amino]-b-D-glucopyranuronosyl]-42-O-a-D-mannopyranosyl-N15-methyl- (9CI)
• 110882-85-4
• C83H88 Cl2 N8 O29
• .

• Riboflavin5'-(trihydrogen diphosphate), P'®5'-ester with adenosine
• 146-14-5
• C27H33 N9 O15 P2
• 282-733-8
• 785.549742
• .

• Rifamycin,4-O-[2-(ethylphenylamino)-2-oxoethyl]- (9CI)
• 16784-09-1
• C47H58 N2 O13
• 0
• .

• Rhodopas AXCM2
• 9005-09-8
• C30H39Cl3O18X2
• 793.98
• .

• Retinamide,N-[4-(ethoxycarbonyl)phenyl]-
• 53839-71-7
• C₂₉H₃₇NO₃
• 447.609
• .

• Rhenium,tris(2,4-pentanedionato-kO2,kO4)-, (OC-6-11)-
• 14284-91-4
• C15H21 O6 Re
• 238-190-4
• 483.5323
• .

• Reductase, coenzymeM-7-mercaptoheptanoylthreonine phosphate heterodisulfide
• 116515-35-6
• .

• RNA formation factorNERF (human isoform NERF-1a reduced) (9CI)
• 181233-60-3
• 0
• .

• Reten 220
• 26006-22-4
• 0
• .

• Reaction product of benzoic acid, 2,3,4,5-tetrachloro-6-cyano-, methyl ester with sodium methylate and 1,3-benzenediamine, 2-methyl-
• 106276-79-3
• C₁₇H₁₆Cl₄N₃NaO₃
• 0
• .

• Resins, copals
• 9000-14-0
• C₂₀H₁₇FO₃S
• 232-527-9
• 0
• .

• Residual oils(petroleum), acid-treated
• 64742-17-2
• 0
• .

• Retinal
• 116-31-4
• C20H28 O
• 204-135-8
• 284.48
• .

• RNA formation factorCTF 4 (chicken reduced) (9CI)
• 146992-06-5
• 0
• .

• RNA formation factorCELF (rat clone l2reduced) (9CI)
• 142662-43-9
• .

• Ro 20-7222 (9CI)
• 64734-75-4
• .

• Rikanon UA 5002, a-hexadecyl-w-[(9Z)-9-octadecen-1-yloxy]-
• 219562-35-3
• (C2H4 O)n C34 H68 O
• .

• Retinol,13,14-dihydro-13,14-dihydroxy-, (13R,14R)- (9CI)
• 157153-38-3
• C20H32 O3
• 0
• .

• Rifamycin VIII,1',4-didehydro-1-deoxy-5'-[4-(1,1-dimethylethyl)-1-piperazinyl]-1,4-dihydro-3'-hydroxy-1-oxo-(9CI)
• 143526-67-4
• C51H64 N4 O13
• 941.0729
• .

• Resins, mastic
• 61789-92-2
• 263-098-6
• 0
• .

• Ruthenate(2-),pentachloronitrosyl-, potassium (1:2), (OC-6-21)-
• 15928-38-8
• Cl5N O Ru . 2 K
• 386.5377
• .

• Rifamycin VIII,1',4-didehydro-1-deoxy-1,4-dihydro-3'-hydroxy-1-oxo-5'-(1-piperazinyl)-
• 148235-97-6
• C47H56 N4 O13
• 884.9665
• .

• Reductase,cytochrome P 450
• 9039-06-9
• 0
• .

• Ristomycin A aglycone,34-O-[2-(acetylamino)-2-deoxy-b-D-glucopyranosyl]-22,31-dichloro-7-demethyl-64-O-demethyl-19-deoxy-56-O-[2-deoxy-2-[(8-methyl-1-oxononyl)amino]-b-D-glucopyranosyl]-42-O-a-D-mannopyranosyl-
• 91032-26-7
• C88H97 Cl2 N9 O33
• 0
• .

• Ribofuranose,5-(dihydrogen phosphate) 1-(trihydrogen diphosphate) (9CI)
• 97-55-2
• C5H13 O14 P3
• 0
• .

• Relaxin
• 9002-69-1
• 0
• .

• Ranalexin (9CI)
• 155761-99-2
• C97H167 N23 O22 S3
• 0
• .

• Rationale
• 9064-91-9
• C₃₁H₆₇Cl₃N₄O
• 0
• .

• Rifamycin,25-O-deacetyl-1,4-dideoxy-1,4-dihydro-25-O-[3-[(1-methyl-3-piperidinyl)methoxy]-1,3-dioxopropyl]-3-(4-morpholinyl)-1,4-dioxo-
• 113303-81-4
• C49H65 N3 O15
• 936.0515
• .

• Retinoyl fluoride
• 83802-77-1
• C20H27 F O
• 0
• .

• Ruthenate(3-),hexachloro-, (OC-6-11)-
• 21595-26-6
• Cl6Ru
• 244-467-0
• 313.788
• .

• Retinol,2,2-dimethylpropanoate (9CI)
• 20559-05-1
• C25H38 O2
• 243-876-1
• 370.56802
• .

• Ribitol,pentakis(4-hydroxybenzoate) (9CI)
• 112727-22-7
• C40H32 O15
• 0
• .