Structure	Chemical Name	CAS	MF
	Spiro[cyclopropane-1,5-[3]oxatricyclo[4.2.0.02,4]octane] (9CI)	123152-56-7	C9H12O
	Spiro[bicyclo[3.1.0]hexane-6,2-[1,3]dioxolane], 2-methyl-, [1R-(1-alpha-,2-bta-,5-alpha-)]- (9CI)	117465-62-0	C9H14O2
	Spiro[1,3-benzodioxole-4(3aH),1-cyclopropane] (9CI)	914769-03-2	C9H10O2
	Spiro[cyclohexane-1,6-[2,3]diazabicyclo[3.1.0]hexane] (9CI)	88245-31-2	C9H16N2
	spiro(1,3-dioxolane-2,10'-tricyclo[5.2.1.0~2,6~]deca[4,8]diene)-3'-one	54275-37-5	C12H12O3
	spiro(2H-benzo[h]chromene-2,1'-cyclohexane)		C18H18O
	spiro(androst-5-ene-17,2'-[1,3]-dithiolane)-3-yl acetate		C23H34O2S2
	spiro(4H-[1,3]benzodioxine-2,4'-[2,5]cyclohexadiene)-1',4-dione	6696-66-8	C13H8O4
	spiro[1,3-benzodioxole-2,1'-cyclopentane]-5-amine		C11H13NO2
	spiro[4-azatricyclo[5.2.1.0~2,6~]dec[8]ene-10,1'-cyclopropane]-3,5-dione		C11H11NO2
	2,3'-spirobi[1-benzothiophene]-2',3(2H,3'H)-dione		C15H8O2S2
	spiro(pentacyclo[5.3.0.0~2,5~.0~3,9~.0~4,8~]decane-10,2'-[1,3]-dioxolane)-2-carboxylic acid	98516-59-7	C13H14O4
	Spiro[1,3-dioxolane-2,2-[6]oxabicyclo[3.1.0]hexane], (+)-	319491-92-4	C7H10O3
	Spiro5.6dodecan-7-ol	1130-20-7	C12H22O
	Spiro[bicyclo[3.1.1]heptan-3,1′-[2]cyclohexen]-4′-on, 2,6,6-trimethyl-, [1S-(1.alpha,2.beta,3.beta,5.alpha)]-	133636-82-5	C15H22O
	Spiro[furo[3,4-c]pyridine-3(1H),4'-piperidine]	1017599-04-0	C11H14N2O
	SPIRO[1,3-DIPHENYL-2,4,6(1H,3H,5H)-PYRIMIDINETRIONE-5,5'-(9-CHLORO-2,3,4,4A,5,6-HEXAHYDRO-1H-PYRIDO[1,2-A]QUINOLINE)]		C28H24ClN3O3
	Spiro[3-oxatricyclo[3.2.1.02,4]octane-6,3-oxetane] (9CI)	371775-05-2	C9H12O2
	Spiro[1-azabicyclo[2.2.2]octane-2,3-pyrrolidine] (9CI)	646055-90-5	C10H18N2
	Spiro[2.4]hepta-4,6-diene-1-carboxaldehyde, 2,2-dimethyl- (9CI)	110211-41-1	C10H12O
	Spiro[4.5]dec-7-en-6-ol, (6S)- (9CI)	478272-73-0	C10H16O
	SPIRO[CYCLOPENTANE-1,9'-(2,6-DIBROMO-9H-FLUORENE)]		C17H14Br2
	spirostan-3-ol, (3 alpha, 5 alpha, 25R)	6788-40-5	C27H44O3
	Spiro Compounds
	Spiro[furo[3,4-b]pyridine-5(7H),4'-piperidin]-7-one	767282-21-3	C11H12N2O2
	Spiro 4-[2-amino-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-6]pyran-3-carbonitrile]-3'-[1'-(3-bromobenzyl)-1',3'-dihydro-2h-indol-2'-one]
	3,3-[spiro-2-adamantyl]-1-indanone hydrazone
	Spiro 2-[4-amino-9-methyl-5-oxo-7,8-diazbicyclo[4.3.0]nona-3,6,9-triene-3-carbonitrile]-4-[1'-benzyloxycarbonyl piperdine]
	Spiro 4-[2-amino-3-cyano-5-(2'-tiglyloxycarbonyl)-ethoxocarbonyl-6-methylpyran]-3'-[5'-nitro-1',3'-dihydro-2h-indol-2'-one]
	spiro 2',2'-[N-(4'-fluorophenyl)-thiazolidin-4'-one]-3,3-[oxindole]
	SPIRODELA POLYRRHIZA EXTRACT
	Spiro[1-azabicyclo[2.2.2]octane-3,2'-oxirane] hydrochloride	64168-68-9	C8H14ClNO
	Spiro[2.3]hexane-1-carboxylic acid, 1-amino-, methyl ester	761394-75-6	C8H13NO2
	Spiro[bicyclo[3.1.0]hexane-2,2-[1,3]dioxolane], 6-methylene-	166193-02-8	C9H12O2
	Spirooxirane-2,5(6H)-4,7phenanthroline	173-86-4	C13H10N2O
	3,3-Spiro-2-[5,5-dimethylcyclohexane-1,3-dionoyl]-5-phenyl dihydro-2H-pyrrolo[3,4-d]isoxazole-4,6-(3H,5H)-dione
	Spiro 2-[4-amino-9-propyl-5-oxo-7,8-diazbicyclo[4.3.0]nona-3,6,9-triene-3-carbonitrile]-4-[1'-benzyloxycarbonyl piperdine]
	Spiro 4-[2-amino-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-6]pyran-3-carbonitrile]-3'-[1'-acetyl-1',3'-dihydro-2h-indol-2'-one]
	Spiro[3H-2,1-benzoxathiol-3'-oxo-1,1'-naphtho-(1,8-d,e)3H-1,2-thiazin-2-methyl-3-one]
	Spiro compounds with polycyclic components are not supported in current version
	spiro-[cyclohexyl]-3-[2-phenyl-3,4-dihydro-2h-1,4,2,5-benzoxaphosphinin-2-one
	spiro 3-[1-benzyl oxindyl]-2'-[3'-(3,4-dichlorophenyl)thiazolidin-4-one]
	spiro 3-[1-benzyl oxindyl]-2'-[3'-(4-flourophenyl)thiazolidin-4-one]
	Spiro[2.4]hepta-4,6-diene-1-carbonyl chloride, 2,2-dimethyl- (9CI)	53018-39-6	C10H11ClO
	Spiro[2H-indene-2,2-pyrrolidine]-5,6-diol, 1,3-dihydro- (9CI)	100038-08-2	C12H15NO2
	Spiro[6H-cyclopent[d]isoxazole-6,2-[1,3]dioxolane] (9CI)	43090-49-9	C8H7NO3
	4'-SPIRO-3-[N-(4-AMINO)BENZYL-2-PYRROLIDINONE]-PIPERIDINE 2HCL
	Spiro[4.5]dec-7-en-1-one, 10-ethyl-6-methyl-, (6R,10S)-rel- (9CI)	678981-05-0	C13H20O
	Spirocyclohexane-1,2-1,3dioxino4,5,6-hiindolizin-9-ol, 8-(1,1-dimethylethyl)dimethylsilyloxyoctahydro-, 3aS-(3a.alpha.,8.alpha.,9.beta.,9a.beta.,9b.alpha.)-	156206-14-3	C20H37NO4Si
	Spiro[isoquinoline-1(2H),4-piperidin]-3(4H)-one, 1-methyl- (8CI)	801164-52-3	C14H19N2O
	Spiro[4H-cyclopenta-1,3-dioxole-4,2-oxirane], tetrahydro-2,2-dimethyl-, (3a-alpha-,4-ba-,6a-alpha-)- (9CI)	163152-76-9	C9H14O3
	Spiro[2.4]heptane-1-carboxamide, 2-methyl- (9CI)	680619-09-4	C9H15NO
	SPIRO[1,3-CYCLOHEXANEDIONE-2,5'-(3'-(2',3'-DIMETHYLPHENYL)-2',3',4',4A',5',6'-HEXAHYDRO-1'H-PYRAZINO[1,'2'-A']QUINOLINE)]		C25H28N2O2
	SPIRO[ADAMANTANE-2,2'-(6'-(4'-CHLOROPHENYL)-4H-1',3'-DIOXIN-4'-ONE)]		C19H19ClO3
	Spiro[cyclohexane-1,2-[4H-1,3]dioxolo[4,5-c]pyrrole], 4-ethyltetrahydro-, (3aR,4R,6aS)-rel- (9CI)	604789-35-7	C12H21NO2
	Spirocyclohexane-1,2-1,3dioxino4,5,6-hiindolizin-8-ol, 9-(1,1-dimethylethyl)dimethylsilyloxyoctahydro-, 3aS-(3a.alpha.,8.alpha.,9.beta.,9a.beta.,9b.alpha.)-	156206-13-2	C20H37NO4Si
	Spiro3,7-dioxabicyclo4.1.0heptane-2,2-2Hpyran, tetrahydro-, (1.alpha.,2.beta.,6.alpha.)-	191659-53-7
	Spirocyclohexane-1,2-1,3dioxino4,5,6-hiindolizine, 8-butoxyoctahydro-9-(methoxymethoxy)-, 3aS-(3a.alpha.,8.alpha.,9.beta.,9a.beta.,9b.alpha.)-	156206-04-1	C20H35NO5
	SPIRO[CYCLOHEXANE-1,5'-(2'-[(3'-ALLYL-4'-OXO-3',4',5',6'-TETRAHYDROBENZO[H']QUINAZOLIN-2'-YL)SULFANYL]-N-PHENYLPROPANAMIDE)]		C29H31N3O2S
	Spiro[4.5]dec-7-ene-1-carboxaldehyde, 4,8-dimethyl-, (4R)- (9CI)	729563-50-2	C13H20O
	Spiro[2.5]oct-7-ene-5-carboxaldehyde, 4-methyl- (9CI)	344294-60-6	C10H14O
	SPIRO[1,3-DIAZOLIDINE-5,5'-2H,3H,4H-BENZO[F]OXEPANE]-2,4-DIONE
	Spiro[furan-2(3H),2(3H)-[1H]pyrrolizine] (9CI)	457652-65-2	C10H11NO
	SPIRO[1,3-CYCLOHEXANEDIONE-2,5'-(9'-BROMO-2',3',4',4A',5',6'-HEXAHYDRO-1H-PYRIDO[1',2'-A']QUINOLINE)]		C18H20BrNO2
	Spiro[cyclopropane-1,3-[1,4]diazabicyclo[3.2.0]heptane] (9CI)	147568-84-1	C7H12N2
	4'-SPIRO-[3-(N-4-NITROBENZYL-2-PIPERIDONE)]PIPERIDINE HCL
	SPIRO[1,3-DIPHENYL-2,4,6(1H,3H,5H)-PYRIMIDINETRIONE-5,5'-(3'-METHYL-2',3',4',4A',5',6'-HEXAHYDRO-1'H-PYRIDO[1',2'-A']QUINOLINE)]		C29H27N3O3
	Spiro[6-oxabicyclo[3.1.0]hexane-3,2-oxirane] (9CI)	652142-48-8	C6H8O2
	Spiro[3.3]heptan-2-one, 1-chloro-1-methyl-	42077-46-3	C8H11ClO
	Spiro[2H-1-benzopyran-2,1-cyclobutane], 4-azido-6-ethyl-3,4-dihydro-4-methyl-	939411-50-4	C15H19N3O
	Spiro[furo[3,4-c]pyridine-3(1H),4'-piperidine], 1'-(phenylmethyl)-	1017599-03-9	C18H20N2O
	Spiro[naphthalene-2(1H),2-piperidine], 1-ethyl-3,4-dihydro- (9CI)	742038-36-4	C16H23N
	Spiro[cyclobutane-1,5(3aH)-furo[2,3-d][1,3]dioxole] (9CI)	120906-69-6	C8H10O3
	Spiro[bicyclo[3.2.0]hept-6-ene-2,2-[1,3]dioxolane]	202393-37-1	C9H12O2
	Spiro[7-azabicyclo[2.2.1]heptane-2,2-[1,3]dioxolane] (9CI)	355137-55-2	C8H13NO2
	Spiro[3,6-dioxabicyclo[3.1.0]hexane-2,4-imidazolidine] (9CI)	130201-65-9	C6H10N2O2
	Spiro[bicyclo[3.2.0]hept-2-ene-6,2-[1,3]dioxolane]	73057-70-2	C9H12O2
	Spiro[bicyclo[3.1.0]hexane-6,2-oxirane], 3-(1-propenyl)- (9CI)	115025-70-2	C10H14O
	Spiro[bicyclo[4.1.0]heptane-2,2-[1,3]dioxolane] (9CI)	32523-38-9	C9H14O2
	Spiro[3.3]heptan-1-one	63049-05-8	C7H10O
	Spiro[cyclohexane-1,3'(1'H)-furo[3,4-c]pyridine]-1',4-dione	328233-20-1	C12H11NO3
	Spiro[bicyclo[3.1.0]hex-3-ene-2,2-[1,3]dioxolane], 6-methylene-, (-)-	117341-96-5	C9H10O2
	Spiro[2,5-cyclohexadiene-1,3-[3H]indol]-2(1H)-one, 1,3-dimethyl- (9CI)	797762-39-1	C15H15NO
	Spiro 2-[4-amino-9-butyl-7-phenyl-5-oxa-7,8-diazbicyclo[4.3.0]nona-3,6,9-triene-3-carbonitrile]-3'-[1'-benzyl-1',3'-dihydro-2h-indol-2'-one]
	Spiro 2-[4-amino-9-butyl-5-oxo-7,8-diazbicyclo[4.3.0]nona-3,6,9-triene-3-carbonitrile]-3'-[1'-propyl-1',3'-dihydro-2h-indol-2'-one]
	Spiro[imidazolidine-4,1-[1H]indene]-2,5-dione	102325-53-1	C11H8N2O2
	Spiro[3,8-dioxatricyclo[5.1.0.02,4]octane-5,2-oxirane] (9CI)	198269-77-1	C7H8O3
	Spiro[2H-benzimidazole-2,4-[4H-1,2,3]triazole] (9CI)	262284-28-6	C8H5N5
	Spiro[bicyclo[2.2.1]hept-2-ene-7,2-[1,3]dioxolane]	1491-12-9	C9H12O2
	1,1-Spirobiindan	7197-62-8	C17H16
	Spiro[1,4-benzodioxin-2(3H),1-cyclohexane] (9CI)	870717-18-3	C13H16O2
	Spiro[5,8-methanoquinoxaline-9,2-oxirane] (9CI)	362600-06-4	C10H6N2O
	Spironolactone-d6 (Major)		C24H32O4S
	Spiro[furo[3,4-d]-1,3-dioxole-4(3aH),3-oxetane] (9CI)	68051-82-1	C7H8O4
	Spiro[1,3-benzodioxole-4(3aH),2-oxirane] (9CI)	35760-45-3	C8H8O3
	Spiro[2.4]heptan-4-one, 7-hydroxy-1,7-dimethyl-, (1R,3R,7S)-rel- (9CI)	404001-73-6	C9H14O2
	spiroquinazoline	157075-58-6	C23H19N5O3
	Spiro[cyclopropane-1,6'-[2,7]epiazobicyclo[2.2.1]heptane]
	Spiro[decalin-2,4'-imidazolidine]-2',5'-dione	18656-11-6
	5α-Spirost-25(27)-ene-1β,3β-diol	90865-22-8	C27H42O4

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