• Sperm-activatingpeptide (Clypeaster japonicus egg jelly coat) (9CI)
• 112714-09-7
• C40H66 N12 O19
• .

• Spiro[furan-3(2H),1'(2'H)-naphthalen]-2-one,5-(3-furanyl)-3',4,4',4'a,5,7',8',8'a-octahydro-4',7'-dihydroxy-4'a,5'-bis(hydroxymethyl)-2'-methyl-,(1'R,2'R,4'R,4'aR,5S,7'S,8'aS)- (9CI)
• 103994-18-9
• C20H26 O7
• .

• Segetalin D (9CI)
• 164991-91-7
• C37H49 N7 O8
• 719.8271
• .

• Stannane,dibutylbis[(1-oxotetradecyl)oxy]- (9CI)
• 28660-67-5
• C36H72 O4 Sn
• 249-134-3
• 687.77
• .

• Syntanox 14-18 (9CI)
• 64334-03-8
• .

• Saxagliptin
• 361442-04-8
• C₁₈H₂₅N₃O₂
• 315.41
• .

• Sulfobutanedioic acid, laneth-5 ester, disodium salt
• 68890-92-6
• 0
• .

• Sinesto B
• 169150-26-9
• C₈H₁₆O₂
• 144.21144
• .

• Stibine, tributyl-
• 2155-73-9
• C12H27 Sb
• 218-455-0
• 293.1
• .

• Strontium telluride(SrTe)
• 12040-08-3
• SrTe
• 234-915-3
• 215.22
• .

• Silsesquioxanes, Ph Pr,hydroxy-terminated
• 114697-07-3
• .

• Spiro[2,5-methano-7H-oxireno[3,4]cyclopent[1,2-d]oxepin-7,2'-oxiran]-3(2H)-one,hexahydro-1b-hydroxy-6a-methyl-8-(1-methylethenyl)-,(1aS,1bR,2S,2'R,5S,6aR,7aR,8R)-
• 2571-86-0
• C15H18 O5
• 278.33
• .

• Spiro[cyclopentane-1,9'-[1,4:5,8]dimethanonaphthalene](8CI,9CI)
• 166-08-5
• C16H14
• .

• Sulfuric acid, ceriumsalt (1:?)
• 24670-27-7
• Ce. x H2 O4 S
• 246-392-9
• 568.4198
• .

• Stigmast-5-en-3-ol, (3b,24S)-
• 83-47-6
• C29H50 O
• 201-481-1
• 414.7067
• .

• S-Allyl-3-hydroxy-17-thioniamorphinan
• 132958-69-1
• C₁₉H₂₅OS+
• 0
• .

• Superphosphates
• 8011-76-5
• Ca·2H₃O₄P
• 232-379-5
• 236.0654
• .

• Somatostatin (sheep),8-D-tryptophan-14-D-cysteine- (9CI)
• 61950-59-2
• C76H104 N18 O19 S2
• 1637.88
• .

• Styrene, butyl acrylate, 2-hydroxyethyl methacrylate, acrylic acid polymer
• 26985-11-5
• C₂₄H₃₄O₇
• 0
• .

• Sulfuric acid, vanadiumsalt (8CI,9CI)
• 16785-81-2
• H2O4 S . x V
• 454.66
• .

• Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,2',4',5',7'-tetrabromo-4,5,6,7-tetrachloro-3',6'-dihydroxy-
• 13473-26-2
• C20H4 Br4 Cl4 O5
• 236-747-6
• 785.67
• .

• Spiro[5.5]undec-3-en-2-one,10-bromo-9-chloro-7-hydroxy-1,5,5,9-tetramethyl-, (1R,6S,7R,9S,10S)-
• 141361-46-8
• C15H22 Br Cl O2
• .

• Spiro[8-azoniabicyclo[3.2.1]octane-8,1'-pyrrolidinium],3-hydroxy-, (1a,3b,5a)- (9CI)
• 99945-31-0
• C11H20 N O
• 0
• .

• Silver, mol. (Ag5)
• 64475-46-3
• Ag5
• 0
• .

• Sulfuric acid,monodecyl ester, magnesium salt (2:1)
• 25446-93-9
• C10H22 O4 S . 1/2 Mg
• 246-989-4
• 610.93504
• .

• Sulfonium,[4-hydroxy-4-oxido-10-oxo-7-[(1-oxotetradecyl)oxy]-3,5,9-trioxa-4-phosphatricos-1-yl]dimethyl-,inner salt
• 75479-76-4
• C35H69 O8 P S
• 0
• .

• Silane,trichloro(2-chloroethyl)-
• 6233-20-1
• C2H4 Cl4 Si
• 228-345-4
• 197.95
• .

• Stannane,bromotripentyl-
• 3091-18-7
• C15H33 Br Sn
• 412.08
• .

• Silane,triethoxy[2-(tributylstannyl)ethyl]-
• 128093-63-0
• C20H46 O3 Si Sn
• 481.3729
• .

• Sulfamic acid,N-2-naphthalenyl-, ion(1-)
• 10344-95-3
• C10H8 N O3 S
• 0
• .

• Spiro[9H-benzo[a]fluorene-9,2'(3'H)-furo[3,2-b]pyridin]-5(6H)-one,1,2,3,3'a,4,4',4a,5',6',6a,6b,7,7',7'a,8,11,11a,11b-octadecahydro-3-hydroxy-3',6',10,11b-tetramethyl-,(2'R,3S,3'R,3'aS,4aS,6'S,6aR,6bS,7'aR,11aS,11bR)-
• 19773-24-1
• C₂₇H₄₁NO₃
• 0
• .

• Sanguicin
• 72026-82-5
• 0
• .

• Stibine oxide,triphenyl-
• 4756-75-6
• C18H15 O Sb
• 225-292-9
• 369.08
• .

• Silanetriol, 1-phenyl-,1,1,1-triacetate
• 18042-54-1
• C₁₂H₁₄O₆Si
• 241-952-9
• 282.32
• .

• Spiro[2.5]octane,1-methoxy-
• 30451-98-0
• C9H16 O
• .

• Silane, (plumbyloxy)-(8CI,9CI)
• 14450-85-2
• H6O Pb Si
• .

• Spiro[1,3-dithiolo[4,5-b]furan-2,3'(2'H)-furan],hexahydro-2',3a-dimethyl-
• 38325-25-6
• C₁₀H₁₆O₂S₂
• 253-884-7
• 0
• .

• Selenocyanic acid(7CI,8CI,9CI)
• 13103-11-2
• CH N Se
• 104.9774
• .

• Sialyltransferase,cytidine monophosphoacetylneuraminate-b-galactoside a2®6- (human protein moiety reduced) (9CI)
• 126649-90-9
• 0
• .

• Selenious acid,manganese(2+) salt (1:1)
• 15702-34-8
• H2O3 Se . Mn
• 239-796-1
• 181.896249
• .

• Silanamine,N,1,1,1-tetramethyl-N-(trimethylsilyl)-
• 920-68-3
• C₇H₂₁NSi₂
• 213-061-5
• 175.41934
• .

• Silylene, telluroxo-(9CI)
• 12067-53-7
• SiTe
• 159.7173
• .

• Sophora japonica, ext.
• 90131-19-4
• 290-329-8
• 0
• .

• Silicic acid
• 1343-98-2
• H₂O₃Si
• 215-683-2
• 78.09958
• .

• Silane,difluorodimethyl-
• 353-66-2
• C₂H₆F₂Si
• 206-540-5
• 96.15
• .

• Spirostan-3-ol, (3a,5b,25R)-
• 16653-88-6
• C27H44 O3
• 416.6365
• .

• Silane, ethynyl-(7CI,8CI,9CI)
• 1066-27-9
• C2H4 Si
• 56.1387
• .

• Silanamine,N,1,1,1-tetramethyl-N-(phenylmethyl)-
• 14884-70-9
• C11H19 N Si
• 193.3608
• .

• Spiro[1,7-epoxynaphthalene-8(4H),2'-naphtho[1,8-de][1,3]dioxin]-4,5(1H)-dione,4a,6,7,8a-tetrahydro-, (1R,4aS,7S,8aS)- (9CI)
• 159933-91-2
• C20H14 O5
• .

• Samarium, isotope ofmass 148
• 14913-64-5
• Sm
• 0
• .