• Rhomotoxin
• 78690-80-9
• C20H32 O6
• 0
• .

• Rubidium, isotope ofmass 85
• 13982-12-2
• Rb
• 0
• .

• RNA formation factor(Brassica napus gene agamous reduced) (9CI)
• 148997-46-0
• 0
• .

• Ruthenium carbide (RuC)
• 12012-13-4
• CRu
• 234-573-5
• 113.08
• .

• Resins, oleo-, parsley
• 8025-95-4
• 0
• .

• Receptor,serotoninergic S1Db (rabbit reduced) (9CI)
• 172727-63-8
• 0
• .

• RNA formation factor(Escherichia coli clone pCRL11 gene crl precursor reduced) (9CI)
• 148349-72-8
• 0
• .

• Rifamycin,4-O-[2-[bis(2-methylpropyl)amino]-2-oxoethyl]- (9CI)
• 16784-05-7
• C47H66 N2 O13
• 867.0325
• .

• Ruthenium(2+),tris(1,10-phenanthroline-kN1,kN10)-, (OC-6-11-L)-
• 24162-09-2
• C36H24 N6 Ru
• 641.6849
• .

• RB 88724
• 145386-11-4
• C₁₀H₁₀N₂O₅
• 0
• .

• Retinal, 4-oxo-
• 33532-44-4
• C20H26 O2
• 0
• .

• RNA formation factorRSRF (human clone lRSRFC9 reduced) (9CI)
• 145892-43-9
• 0
• .

• Ruthenium,bis(2,2'-bipyridine-kN1,kN1')[[2,2'-bipyridine]-4,4'-dicarboxylato(2-)-kN1,kN1']-, (OC-6-22)-
• 64189-97-5
• C32H22 N6 O4 Ru
• 0
• .

• Rhodate(3-),hexakis(nitrito-kN)-,sodium (1:3), (OC-6-11)-
• 15489-17-5
• N6O12 Rh . 3 Na
• 239-516-8
• .

• Retinol,7,10-dihydro-10-hydroxy-
• 3230-76-0
• C20H32 O2
• 221-771-1
• 304.46688
• .

• Ropivacaine monohydrochloride
• 98717-15-8
• C₁₇H₂₇ClN₂O
• 310.86
• .

• RNA formation factor(Chromatium vinosum clone pAVR1/pAVR2 gene rbcR) (9CI)
• 142661-98-1
• 0
• .

• RNA,(Gm-sp-Am-sp-Gm-sp-Um-sp-Um-Gm-Cm-(2'-C-2-propenyl)U-G-A-Um-G-Am-Gm-Gm-Cm-Cm-Gm-Am-Am-Am-Gm-Gm-Cm-Cm-G-Am-Am-A-Gm-Um-Cm-Um-Gm-(3'®3')-[1'-de(6-amino-9H-purin-9-yl)]dA)
• 220420-78-0
• .

• RNA formation factorCRP 1 (rat C/EBP-related subunit reduced) (9CI)
• 142805-41-2
• 0
• .

• Rifamycin II,3'-(methoxycarbonyl)- (9CI)
• 102366-76-7
• C41H50 N2 O13
• .

• Radium, isotope of mass226
• 13982-63-3
• Ra
• 0
• .

• Ribitol,1-amino-2,5-anhydro-1-deoxy-3,4-O-isopropylidene-, hydrochloride, DL- (8CI)
• 29868-22-2
• C8H15 N O3 . Cl H
• 173.2096
• .

• Rifamycin,20-[1-(3-carboxy-2,2-dimethyl-1-oxopropoxy)ethyl]-20-demethyl-27-O-demethyl-1,4-dideoxy-27-O-(2,6-dideoxy-3,4-O-methylene-b-D-ribo-hexopyranosyl)-1,4-dihydro-1,4-dioxo-
• 114153-91-2
• C50H63 N O19
• 0
• .

• Rhodate(3-),tris[ethanedioato(2-)-kO1,kO2]-, potassium (1:3), (OC-6-11)-
• 15602-35-4
• C6O12 Rh . 3 K
• 373.0101
• .

• Retinal, 12-fluoro-,(9-cis,11-cis)- (9CI)
• 142632-01-7
• C20H27 F O
• 302.4262
• .

• Riboflavin5'-(dihydrogen phosphate), 1,5-dihydro-
• 5666-16-0
• C17H23 N4 O9 P
• 0
• .

• Rhodium sulfide (Rh2S3)
• 12067-06-0
• S
• 235-075-0
• 302.006
• .

• Rubidium telluride(Rb2Te)
• 12210-70-7
• Rb2Te
• 235-388-2
• 298.54
• .

• RU 24969
• 74163-68-1
• C₁₈H₂₂N₂O₅
• 0
• .

• Rifamycin,25-O-deacetyl-3-formyl-
• 16783-97-4
• C36H45 N O12
• 0
• .

• Riboflavin,6-thiocyanato- (9CI)
• 73647-56-0
• C18H19 N5 O6 S
• 0
• .

• Rhodium(1+),dibromotetrakis(pyridine)-, bromide, (OC-6-12)- (9CI)
• 14267-74-4
• C20H20 Br2 N4 Rh . Br
• 659.08
• .

• Retinal, O-ethyloxime
• 99794-88-4
• C22H33 N O
• 0
• .

• Rhizoxin,2,3-deepoxy-2,3-didehydro-17-O-demethyl-
• 103528-76-3
• C34H45 N O8
• .

• Ristocetin
• 1404-55-3
• C95H112N8O48S
• 215-770-5
• 2166
• .

• Radam
• 115044-19-4
• C₆₀H₁₃₅N₂₁O₆
• 535.72
• .

• RNA formation factor(human clone l14Bgene HOX4D reduced) (9CI)
• 145420-66-2
• 0
• .

• Ruthenium chloride(106RuCl3) (9CI)
• 63767-78-2
• Cl3Ru
• 212.2663
• .

• Rifamycin,18,19-dihydro-3-[[(4-methyl-1-piperazinyl)imino]methyl]- (9CI)
• 71397-49-4
• C43H60 N4 O12
• 0
• .

• Receptor (Drosophilamelanogaster clone 3K-46/3K-1 tachykinin-like reduced) (9CI)
• 144904-57-4
• 0
• .

• Rosin, polymer with4-biphenylol, p-tert-butylphenol and formaldehyde
• 144635-09-6
• .

• Radon
• 10043-92-2
• Rn
• 233-146-0
• 222.0176
• .

• Rhenium, isotope ofmass 189
• 15765-78-3
• Re
• 189
• .

• Rosin acid, methyl ester
• 8050-12-2
• C₁₇H₂₈N₂O₅
• 340.41462
• .

• RG-13577
• 146058-45-9
• C₉H₁₃NO₅
• 0
• .

• Ristomycin A aglycone,5,22,31,55-tetrachloro-7-demethyl-64-O-demethyl-56-O-[2-deoxy-2-[(1-oxodecyl)amino]-b-D-glucopyranosyl]-42-O-a-D-mannopyranosyl-N15-methyl-(9CI)
• 103528-50-3
• C81H84 Cl4 N8 O29
• 0
• .

• rel-(2R,3aR,6aS,8aS,12aS,12bR,13bS)-3a-hydroxy-2-methoxy-6a,9,9,12a-tetramethyl-2,3,3a,6a,7,8,8a,9,10,11,12,12a,12b,13b-tetradecahydro-4H-benzo[a]furo[3,2-j]xanthen-4-one
• 11-30-3
• C₂₄H₃₄O₅
• 822.9321
• .

• Riboflavin, a8-[4-[(2S)-2-amino-2-carboxyethyl]-1H-imidazol-1-yl]-(9CI)
• 37854-44-7
• C23H27 N7 O8
• 0
• .

• Retinol, 15-acetate,13-cis-
• 34356-31-5
• C22H32 O2
• 251-956-2
• 328.48828
• .

• Rosin, oxidized
• 100085-68-5
• 309-211-5
• .