![1,9-Diazaspiro[5.5]undecane-9-carboxylic acid, 1-(2,2,2-trifluoroacetyl)-, 1,1-dimethylethyl ester](/structure/918896-27-2.png)
1,9-Diazaspiro[5.5]undecane-9-carboxylic acid, 1-(2,2,2-trifluoroacetyl)-, 1,1-dimethylethyl ester
![1,9-Diazaspiro[5.5]undecane-9-carboxylic acid, 1-(2,2,2-trifluoroacetyl)-, 1,1-dimethylethyl ester](/structure/918896-27-2.png)
1,9-Diazaspiro[5.5]undecane-9-carboxylic acid, 1-(2,2,2-trifluoroacetyl)-, 1,1-dimethylethyl ester
![1-Oxa-5-azaspiro[5.5]undecane, 5-(2-diazo-1,3-dioxobutyl)-3-methyl-](/structure/88523-27-7.png)
1-Oxa-5-azaspiro[5.5]undecane, 5-(2-diazo-1,3-dioxobutyl)-3-methyl-
![2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane,3,9-bis(trichloromethyl)-, 3,9-dioxide](/structure/62284-94-0.png)
2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane,3,9-bis(trichloromethyl)-, 3,9-dioxide
![1,5,9-Trioxa-8,10-diazadispiro[2.0.4.3]undecane,11-(4-chlorophenyl)-10-(1,1-dimethylethyl)-2,2-diethyl-7,7-dimethyl-,(3R,4R,11S)-rel-](/structure/648903-27-9.png)

![1,4-Diazaspiro[5.5]undecane-2,5-dione, 7-methyl-](/structure/90058-27-8.png)
![3,9-dihexyl-2,4,8,10-tetraoxaspiro[5.5]undecane](/structure/2064-94-0.png)
![4,5-epoxy-4,11,11-trimethyl-8-methylenebicyclo[7.2.0]undecane](/structure/13877-94-6.png)
4,5-epoxy-4,11,11-trimethyl-8-methylenebicyclo[7.2.0]undecane
![2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane,3,9-bis[2,4-bis(1,1-dimethylpropyl)phenoxy]-](/structure/70653-94-0.png)
2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane,3,9-bis[2,4-bis(1,1-dimethylpropyl)phenoxy]-
![Phenol, 4,4'-(2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-diyl)bis[2-methyl-](/structure/90144-94-8.png)
Phenol, 4,4'-(2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-diyl)bis[2-methyl-

![5-ethyl-9-(1,2,3,4-tetrahydronaphthalen-2-yl)-1-oxa-4,9-diazaspiro[5.5]undecane](/structure/52109-27-0.png)
5-ethyl-9-(1,2,3,4-tetrahydronaphthalen-2-yl)-1-oxa-4,9-diazaspiro[5.5]undecane
![3-Azaspiro[5.5]undecane-2,4-dione, 3-(3-methylphenyl)-](/structure/52764-94-0.png)
![1,5-Dioxaspiro[5.5]undecane,3,10-dimethyl-7-(1-methylethyl)-2-[1-methyl-2-(phenylthio)ethyl]-](/structure/141859-94-1.png)
1,5-Dioxaspiro[5.5]undecane,3,10-dimethyl-7-(1-methylethyl)-2-[1-methyl-2-(phenylthio)ethyl]-
![1,2,4,5-Tetraoxaspiro[5.5]undecane-3-propanoic acid, 3-methyl-, ethylester](/structure/923267-27-0.png)
1,2,4,5-Tetraoxaspiro[5.5]undecane-3-propanoic acid, 3-methyl-, ethylester
![2,4,8,10-Tetraoxaspiro[5.5]undecane,3,9-bis[4-(4-nitrophenoxy)phenyl]-](/structure/139580-27-1.png)
2,4,8,10-Tetraoxaspiro[5.5]undecane,3,9-bis[4-(4-nitrophenoxy)phenyl]-
![N,N-(2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-diyldipropane-1,3-diyl)bis[N-(3-hydrazino-3-oxopropyl)-beta-alaninohydrazide]](/structure/94291-94-8.png)
![2,8,9-Trioxa-5-aza-1-germabicyclo[3.3.3]undecane,1-(3,3,3-trifluoropropyl)-](/structure/88102-94-7.png)
2,8,9-Trioxa-5-aza-1-germabicyclo[3.3.3]undecane,1-(3,3,3-trifluoropropyl)-


2,4,8,10-Tetraazaundecanediimidamide, 3,9-diimino-N,N''-diphenyl-
![2,8,9-Trioxa-5-aza-1-silabicyclo[3.3.3]undecane,1-(chloromethyl)-3,7,10-trimethyl-](/structure/57078-94-1.png)
2,8,9-Trioxa-5-aza-1-silabicyclo[3.3.3]undecane,1-(chloromethyl)-3,7,10-trimethyl-

4,4,8,8-Tetraethoxy-6,6-diisopropoxy-3,5,7,9-tetraoxa-4,8-disila-6-titanaundecane

![3-Azaspiro[5.5]undecane-2,4-dione, 3-[(4-methyl-1-piperazinyl)methyl]-](/structure/62550-94-1.png)
3-Azaspiro[5.5]undecane-2,4-dione, 3-[(4-methyl-1-piperazinyl)methyl]-
![2,4,6,8,9,11-Hexaoxa-3,7,10-trisila-1,5-digermabicyclo[3.3.3]undecane, 1,5-bis(1,1-dimethylethyl)-3,3,7,7,10,10-hexaphenyl-](/structure/658702-27-3.png)
![1,5-Dioxaspiro[5.5]undecane, 7-chloro-3,3-dimethyl-2-(1-methylethyl)-](/structure/62406-94-4.png)
1,5-Dioxaspiro[5.5]undecane, 7-chloro-3,3-dimethyl-2-(1-methylethyl)-
![9-tert-butyl-3-azaspiro[5.5]undecane](/structure/1206-27-5.png)

![Methanone, [1,11-undecanediylbis(oxy-4,1-phenylene)]bis[phenyl-](/structure/188578-94-1.png)
Methanone, [1,11-undecanediylbis(oxy-4,1-phenylene)]bis[phenyl-
![2,9-Diazaspiro[5.5]undecane-9-carboxamide,N-[4-chloro-2-[[(5-chloro-2-pyridinyl)amino]carbonyl]-6-hydroxyphenyl]-](/structure/873924-27-7.png)
![Spiro[5.5]undecane-3-carboxamide,2,4-dioxo-N-[4-(trifluoromethyl)phenyl]-](/structure/874097-94-6.png)
Spiro[5.5]undecane-3-carboxamide,2,4-dioxo-N-[4-(trifluoromethyl)phenyl]-
![8-(bromomethyl)-10-methyl-9-oxa-2,4-diazaspiro[5.5]undecane-1,3,5-trione](/structure/56865-27-1.png)
8-(bromomethyl)-10-methyl-9-oxa-2,4-diazaspiro[5.5]undecane-1,3,5-trione
![2,8,9-Trioxa-5-aza-1-silabicyclo[3.3.3]undecane,1-(iodomethyl)-3-methyl-](/structure/64212-27-7.png)
2,8,9-Trioxa-5-aza-1-silabicyclo[3.3.3]undecane,1-(iodomethyl)-3-methyl-

![2,9-Diazaspiro[5.5]undecane,9-[(5-methyl-3-phenyl-4-isoxazolyl)methyl]-, bis(trifluoroacetate)](/structure/873433-94-4.png)
2,9-Diazaspiro[5.5]undecane,9-[(5-methyl-3-phenyl-4-isoxazolyl)methyl]-, bis(trifluoroacetate)
![1-(2,5-dinitrophenoxy)-2,8,9-trioxa-5-aza-1-silabicyclo[3.3.3]undecane](/structure/86881-27-8.png)
1-(2,5-dinitrophenoxy)-2,8,9-trioxa-5-aza-1-silabicyclo[3.3.3]undecane