• Spiro[2H-indole-2,4'-[4H-1,6]methanoquinoline]-4'a(5'H)-carboxylicacid, 8'-ethyl-1,2',3,3',6',7',8',8'a-octahydro-3-oxo-, methyl ester,(1'S,4'aS,6'R,8'S,8'aS)- (9CI)
• 16620-29-4
• C21H26 N2 O3
• .

• Spiro[2,5-cyclohexadiene-1,2'(3'H)-pyrano[2,3,4-ij]isoquinolin]-4-one,3'a,4',5',6'-tetrahydro-3,9'-dimethoxy-4'-methyl- (9CI)
• 32214-95-2
• C19H21 N O4
• .

• Selenium oxide (SeO3)(6CI,7CI,8CI,9CI)
• 13768-86-0
• O3Se
• 237-385-1
• 126.9582
• .

• Sludgex 691
• 30915-61-8
• C₄H₃NaO₄
• 138.05399
• .

• Spiro[2H-1-benzopyran-3(4H),4'-[4H]cyclopenta[b]furan]-2,2',4(3'H)-trione,5'-ethenyl-3'a,5',6',6'a-tetrahydro-3',5,5'-trimethyl-, (3R,3'S,3'aS,5'R,6'aR)-(9CI)
• 158204-54-7
• C20H20 O5
• .

• Spiro[4H-furo[3,2-c]pyran-2(3H),8'-[3,6]methano[6H]furo[2,3-b]pyran]-6'-carboxylicacid,5'-[(1R)-2-(3-furanyl)-1-methyl-2-oxoethyl]-2',3',3a,3'a,4',5',6,7'a-octahydro-3',4,4,7'a-tetramethyl-2',6-dioxo-,methyl ester, (2R,3'S,3aS,3'aS,5'R,6'R,7'aR)- (9CI)
• 152845-80-2
• C27H30 O10
• .

• Synthetase,polydeoxyribonucleotide (nicotinamide adenine dinucleotide)
• 37259-52-2
• 0
• .

• Stigmast-5-en-3-ol,24,28-epoxy-, (3b,24x)- (9CI)
• 35458-71-0
• C29H48 O2
• 0
• .

• Sorbitan, monoacetate
• 93963-96-3
• C8H14O6
• 300-842-1
• 206.19316
• .

• Sanwet IM 2800D
• 9086-70-8
• 0
• .

• Sulfonium,[2-[(2-cyclohexyl-2-hydroxy-2-phenylacetyl)oxy]ethyl]dimethyl-, iodide (1:1)
• 3569-58-2
• C18H27 O3 S . I
• 450.41
• .

• Sulfuric acid,chromium(3+) salt (3:2), hexahydrate (8CI,9CI)
• 15005-90-0
• Cr. 3/2 H2 O4 S . 3 H2 O
• 500.30
• .

• Somatoliberin (mouse)(9CI)
• 125199-49-7
• C220H365 N69 O64 S
• .

• Stannane,pentyltripropyl-
• 148162-37-2
• C14H32 Sn
• 319.1139
• .

• Spiro[2,26-dioxabicyclo[23.3.1]nonacosa-4,18,20-triene-27,2'-[2H]pyran]-3,9,13-trione,22-ethyl-3',4',5',6'-tetrahydro-7,11,15-trihydroxy-6'-[(2R)-2-hydroxypropyl]-5',6,8,10,12,14,16,28,29-nonamethyl-,(1R,2'R,4E,5'S,6S,6'S,7R,8S,10R,11R,12S,14S,15S,16R,18E,20E,22R,25S,28S,29R)-
• 11052-72-5
• C45H74 O10
• 234-276-0
• 478.74
• .

• SL-8-Azido-ATP
• 113814-58-7
• 0
• .

• Stigmastane-3,4,6,8,15,16-hexol,29-[[2-O-(2-O-methyl-b-D-xylopyranosyl)-b-D-galactofuranosyl]oxy]-, (3b,4b,5a,6b,15a,16b,24R)- (9CI)
• 125338-05-8
• C41H72 O16
• .

• Somatotropin (swineclone pPGH-1 reduced), N-L-alanyl-32-de-L-glutamicacid-33-de-L-arginine-34-de-L-alanine-35-de-L-tyrosine-36-de-L-isoleucine-37-de-L-proline-38-de-L-glutamicacid-
• 119693-74-2
• .

• Streptomycin, dihydro-, 4-aminosalicylate (1:3) (salt)
• 3144-30-7
• C₄₂H₆₂N₁₀O₂₁
• 0
• .

• Synthase, tryptophan
• 9014-52-2
• NULL
• 0
• .

• Siomycin
• 11017-43-9
• C64H88 N16 O22 S4
• 0
• .

• Spiro[3H-[1,3]dioxolo[5,6]indeno[2,1-c]isoxazole-3,1'(3'H)-isobenzofuran]-3'-one,9-[[[2-[6-[(Z)-(4,5-dimethoxy-3-oxo-1(3H)-isobenzofuranylidene)methyl]-1,3-benzodioxol-5-yl]ethyl]methylamino]oxy]-1,3a,9,9a-tetrahydro-4',5'-dimethoxy-1-methyl-,(1'R,3aR,9R,9aR)-rel- (9CI)
• 168434-29-5
• C42H38 N2 O14
• .

• Steel
• 12597-69-2
• 0
• .

• Secretin (swine),3-(L-3-amino-2,5-dioxo-1-pyrrolidineacetic acid)-4-deglycine- (9CI)
• 73829-72-8
• C130H218 N44 O40
• 0
• .

• Silanethiol (8CI,9CI)
• 14044-97-4
• H4S Si
• 64.1823
• .

• Safflower oil, polymerwith p-tert-butylbenzoic acid, isophthalic acid, pentaerythritol, phthalicanhydride and polyethylene glycol, compds. with triethylamine
• 166514-72-3
• .

• Spiro[3H-indole-3,6'(4'aH)-[1H]pyrano[3,4-f]indolizine]-4'-carboxylicacid, 1,2,5',5'a,7',8',10',10'a-octahydro-5,6-dimethoxy-1'-methyl-2-oxo-,methyl ester, (1'R,3S,4'aS,5'aS,10'aS)-
• 122923-45-9
• C23H28 N2 O6
• .

• Siloxanes andSilicones, 3-[(2-aminoethyl)amino]propyl Me, di-Me, methoxy-terminated
• 102782-92-3
• 0
• .

• Stannane,dimethylbis[(1-oxohexadecyl)oxy]- (9CI)
• 3865-35-8
• C34H68 O4 Sn
• 223-385-9
• 659.61132
• .

• Silane, chlorodiethyl-
• 1609-19-4
• C4H11 Cl Si
• 216-540-7
• 122.67
• .

• Spiro[2H-1-benzopyran-2,2'-[2H]indole]-1'(3'H)-propanoicacid, 3',3'-dimethyl-6-nitro-, anhydride with3',3'-dimethyl-6-nitrospiro[2H-1-benzopyran-2,2'-[2H]indole]-1'(3'H)-propanoicacid
• 63998-89-0
• C42H38 N4 O9
• 742.77252
• .

• Stigmasta-7,24(28)-dien-29-oicacid, 2,3,14,20,22,25-hexahydroxy-6-oxo-, g-lactone, (2b,3b,5b,22R)-
• 114805-00-4
• C29H42 O8
• .

• Systol S 219
• 28183-09-7
• C₁₆H₂₈O₈
• 0
• .

• Silane,ethyltris(1-methylethoxy)-
• 18044-47-8
• C11H26 O3 Si
• 241-955-5
• 234.40784
• .

• Silane,isocyanatotrimethyl-
• 1118-02-1
• C4H9 N O Si
• 214-256-8
• 115.21
• .

• Silane,diethyldimethyl-
• 756-81-0
• C6H16 Si
• 116.27674
• .

• Sulfamide,N,N'-bis(hexahydro-1-methyl-2H-azepin-2-ylidene)-
• 126826-77-5
• C14H26 N4 O2 S
• 0
• .

• Scytonemin A (9CI)
• 112793-66-5
• C71H106 N12 O21
• .

• Silane,dichloromethyloctadecyl-
• 5157-75-5
• C19H40 Cl2 Si
• 225-931-1
• 367.51
• .

• Sulfamic acid,mercury(2+) salt (1:1) (8CI,9CI)
• 25278-35-7
• H3N O3 S . Hg
• .

• Silver, [m-[ethanedioato(2-)-kO1,kO2':kO1',kO2]]di-
• 533-51-7
• C2Ag2 O4
• 208-568-3
• 305.78
• .

• Siloxanes andSilicones, di-Me, polymers with hexyl Me silsesquioxanes, methoxy-terminated
• 157709-77-8
• 0
• .

• Stigmast-7-en-26-oicacid, 2,3,14,20,22,28-hexahydroxy-6-oxo-, g-lactone, (2b,3b,5a,22R,24S,25S,28R)- (9CI)
• 31581-82-5
• C29H44 O8
• 0
• .

• Scandium sulfide
• 12166-29-9
• S₃Sc₂
• 235-320-1
• 186.1068
• .

• Solvent Yellow 126
• 73071-62-2
• .

• Sodium bifluoride
• 51273-71-3
• F₂HNa
• 215-608-3
• 61.9945
• .

• Spiro[benzofuran-2(3H),1'(2'H)-naphthalene]-6,7-dicarboxaldehyde,3',4',4'a,5',6',7',8',8'a-octahydro-4,6'-dihydroxy-2',5',5',8'a-tetramethyl-,(1'R,2'R,4'aS,6'R,8'aS)-
• 149598-70-9
• C23H30 O5
• 386.4813
• .

• Selenocyanate (9CI)
• 5749-48-4
• CN Se
• 0
• .

• Silicic acid (H4SiO4),tetrakis(2-ethylhexyl) ester
• 115-82-2
• C32H68 O4 Si
• 204-109-6
• 545.09
• .

• Silicon orthophosphate
• 12037-47-7
• O₁₆P₄Si₃
• 234-858-4
• 412.002704
• .