• Retinoic acid,(2R)-3,4-dihydro-2,5,7,8-tetramethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-2H-1-benzopyran-6-ylester
• 40516-49-2
• C49H76 O3
• 0
• .

• Ruthenium(2+),tris(1,10-phenanthroline-kN1,kN10)-, chloride (1:2), (OC-6-11)-
• 23570-43-6
• C36H24 N6 Ru . 2 Cl
• 712.592
• .

• Rhodate(2-),aquapentachloro-, potassium (1:2), (OC-6-21)-
• 15306-82-8
• Cl5H2 O Rh . 2 K
• 239-345-9
• .

• Rifamycin, 3-formyl-
• 13292-22-3
• C₃₈H₄₇NO₁₃
• 236-311-5
• 725.78 .
• .

• RNA formation factor(Saccharomyces cerevisiae clone pHIR1 gene HIR1 reduced) (9CI)
• 149720-54-7
• 0
• .

• Retinol, 9-cis-
• 22737-97-9
• C20H30 O
• 0
• .

• Retin-3,15-diol
• 6890-93-3
• C20H30 O2
• 0
• .

• Rifamycin,3-[[(4-cyclopentyl-1-piperazinyl)imino]methyl]-25-O-deacetyl-
• 79039-56-8
• C45H62 N4 O11
• 834.99
• .

• RNA formation factor(human gene PBX1 isoform a reduced) (9CI)
• 146150-85-8
• 0
• .

• Reocap E (9CI)
• 85746-53-8
• 0
• .

• Retigabine Dihydrochloride
• 150812-13-8
• C₁₆H₁₈FN₃O₂^.2HCl
• 376.2533
• .

• Resorcinol Formaldehyde Resin - Tulares -S 18
• 65876-95-1
• C₃₁H₂₈O₈
• 528.5492
• .

• R 34995
• 61380-41-4
• C₂₇H₃₄N₂O₇
• 262-750-7
• 498.56806
• .

• Reax 39
• 8068-05-1
• C30H25ClN6
• 505.01
• .

• RNA formation factor CF2 (Drosophila melanogaster strain Oregon R isoform I reduced) (9CI)
• 148813-47-2
• 0
• .

• Retinol, 3,4-didehydro-
• 79-80-1
• C20H28 O
• 201-226-4
• 0
• .

• RC 18 (9CI)
• 82197-74-8
• 0
• .

• Radium, isotope of mass224
• 13233-32-4
• Ra
• 0
• .

• Retinol,D-mannopyranosyl hydrogen phosphate (9CI)
• 55722-25-3
• C26H41 O9 P
• 0
• .

• Rifamycin,4-O-[2-(ethylpropylamino)-2-oxoethyl]- (9CI)
• 16784-02-4
• C44H60 N2 O13
• 824.9528
• .

• Rodilemid
• 100333-50-4
• C₂₅H₄₁Ca₂N₃Na₂O₂₄S
• 0
• .

• Rhodamine 610P
• 23857-51-4
• C₂₈H₃₁ClN₂O₇
• 245-916-3
• 543.00794
• .

• Rhenium, isotope ofmass 188
• 14378-26-8
• Re
• 187.9581
• .

• Rose, Rosa canina, ext.
• 84696-47-9
• 283-652-0
• 0
• .

• Rifamycin,1,4-dideoxy-1,4-dihydro-3-(methoxycarbonyl)-1,4-dioxo- (9CI)
• 72393-97-6
• C39H47 N O14
• 0
• .

• Rifamycin,3-[(2,2-dimethylhydrazinylidene)methyl]-
• 13292-34-7
• C40H53 N3 O12
• 0
• .

• Retinoic acid,4,4-dimethyl-
• 104182-09-4
• C22H32 O2
• .

• Rhodium, tetrakis[m-(hexanoato-kO:kO')]di-, (Rh-Rh)
• 62728-89-6
• C24H44 O8 Rh2
• 666.41
• .

• Ruthenium(3+),pentaammine-
• 55852-53-4
• H15N5 Ru
• 0
• .

• Ruthenium(3+),tris(2,2'-bipyridine-kN1,kN1')-, trichloride, (OC-6-11)-(9CI)
• 28277-46-5
• C30H24 N6 Ru . 3 Cl
• 0
• .

• Rynatan (9CI)
• 130463-94-4
• 0
• .

• RP 6237 (9CI)
• 102648-08-8
• .

• Repressor CHOP 10(mouse 3T3-L1 cell subunit) (9CI)
• 147336-12-7
• 0
• .

• Rhizoxin,2,3:11,12-dideepoxy-2,3,11,12-tetradehydro-
• 103528-77-4
• C35H47 N O7
• .

• Receptor, interferon a/b (human clone lpCEV9-m6/lpCEV9-m24 precursor reduced) (9CI)
• 156986-95-7
• 0
• .

• RP 9768 (9CI)
• 102648-10-2
• .

• Rhodium, tetrakis[m-(propanoato-kO:kO')]di-, (Rh-Rh)
• 31126-81-5
• C12H20 O8 Rh2
• 498.14
• .

• Ruthenocene-103Ru,(2-aminopropyl)- (9CI)
• 105180-32-3
• C13H17 N Ru
• 0
• .

• Receptor, interferon a/b (human isoform p40 precursor) (9CI)
• 163796-60-9
• .

• RCC NOTOX substance 9747
• 131013-81-5
• C₂₈H₄₈N₇O₉S₂+₃
• 406-073-9
• 0
• .

• Racemase, alanine
• 9024-06-0
• 0
• .

• Rifamycin,3-[[(4-methyl-1-piperazinyl)imino]- methyl]-,mixt. with 5-[(3,4,5-trimethoxyphenyl)methyl]-2,4- pyrimidinediamine
• 61498-94-0
• C₅₇H₇₆N₈O₁₅
• 0
• .

• Ruthenate (RuO42-),potassium (1:2)
• 31111-21-4
• K. 1/2 O4 Ru
• 250-473-4
• 243.26
• .

• Retinamide,N-(4-methoxyphenyl)-
• 79965-10-9
• C27H35 N O2
• 405.57
• .

• Ruthenium, isotope ofmass 110
• 26057-91-0
• Ru
• 110
• .

• Ristomycin A aglycone,5,22,31,55-tetrachloro-7-demethyl-64-O-demethyl-56-O-[2-deoxy-2-[(1-oxododecyl)amino]-b-D-glucopyranosyl]-42-O-a-D-mannopyranosyl-N15-methyl-(9CI)
• 105997-85-1
• C83H88 Cl4 N8 O29
• 0
• .

• Ristomycin A aglycone,22,31-dichloro-7-demethyl-19-deoxy- (9CI)
• 104581-79-5
• C59H47 Cl2 N7 O18
• 1212.94658
• .

• Riboflavin5'-(dihydrogen phosphate), 2-thio- (9CI)
• 28979-30-8
• C17H21 N4 O8 P S
• 0
• .

• Retinol,3,4-didehydro-, hexadecanoate (9CI)
• 95632-86-3
• C36H58 O2
• 0
• .

• Radixin (mouse cloneR2/RT1 reduced) (9CI)
• 144517-21-5
• 0
• .