About 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one
1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one (PubChem CID 159924297) has the molecular formula C250H342F3N27O24
and a molecular weight of 4166.64 g/mol. Its IUPAC name is 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one.
Frequently Asked Questions
What is the IUPAC name of 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one?
The IUPAC name of 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one (CID 159924297) is 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one.
What is the SMILES notation for 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one?
The canonical SMILES for 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one is CCN(C)C1(c2ccccc2)CCC2(CC1)CN(Cc1ccc(OC)cc1)C(=O)N2CC1CCC1.CN(C)C1(c2ccccc2)CCC2(CC1)CN(Cc1ccc(C#N)cc1)C(=O)N2CC1CCC1.CN(C)C1(c2ccccc2)CCC2(CC1)CN(Cc1ccc(C(F)(F)F)nc1)C(=O)N2CC1CCC1.CN(C)C1(c2ccccc2)CCC2(CC1)CN(Cc1ccc(O)cc1)C(=O)N2CC1CCC1.CN(C)C1(c2ccccc2)CCC2(CC1)CN(Cc1cccc(C(N)=O)c1)C(=O)N2CC1CCC1.COCCOCCOCCOCCOCCOCCOCCOCCOc1ccc(CN2CC3(CCC(c4ccccc4)(N(C)C)CC3)N(CC3CCC3)C2=O)cc1.COc1ccc(CN2CC3(CCC(c4ccccc4)(N(C)C)CC3)N(CC3(OC)CCC3)C2=O)cc1.COc1ccc(CN2CC3(CCC(c4ccccc4)(N(C)C)CC3)N(CCC3CCOCC3)C2=O)cc1.
What is the InChIKey of 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one?
The InChIKey is NYURCGAYCJFAEJ-UHFFFAOYSA-N. The full InChI is InChI=1S/C45H71N3O10.C31H43N3O3.C30H41N3O3.C30H41N3O2.C29H38N4O2.C29H36N4O.C28H35F3N4O.C28H37N3O2/c1-46(2)45(41-10-5-4-6-11-41)18-16-44(17-19-45)38-47(43(49)48(44)37-39-8-7-9-39)36-40-12-14-42(15-13-40)58-35-34-57-33-32-56-31-30-55-29-28-54-27-26-53-25-24-52-23-22-51-21-20-50-3;1-32(2)31(27-7-5-4-6-8-27)18-16-30(17-19-31)24-33(23-26-9-11-28(36-3)12-10-26)29(35)34(30)20-13-25-14-21-37-22-15-25;1-31(2)30(25-9-6-5-7-10-25)19-17-28(18-20-30)22-32(21-24-11-13-26(35-3)14-12-24)27(34)33(28)23-29(36-4)15-8-16-29;1-4-31(2)30(26-11-6-5-7-12-26)19-17-29(18-20-30)23-32(21-25-13-15-27(35-3)16-14-25)28(34)33(29)22-24-9-8-10-24;1-31(2)29(25-12-4-3-5-13-25)16-14-28(15-17-29)21-32(27(35)33(28)20-22-8-6-9-22)19-23-10-7-11-24(18-23)26(30)34;1-31(2)29(26-9-4-3-5-10-26)17-15-28(16-18-29)22-32(20-25-13-11-23(19-30)12-14-25)27(34)33(28)21-24-7-6-8-24;1-33(2)27(23-9-4-3-5-10-23)15-13-26(14-16-27)20-34(25(36)35(26)19-21-7-6-8-21)18-22-11-12-24(32-17-22)28(29,30)31;1-29(2)28(24-9-4-3-5-10-24)17-15-27(16-18-28)21-30(19-23-11-13-25(32)14-12-23)26(33)31(27)20-22-7-6-8-22/h4-6,10-15,39H,7-9,16-38H2,1-3H3;4-12,25H,13-24H2,1-3H3;5-7,9-14H,8,15-23H2,1-4H3;5-7,11-16,24H,4,8-10,17-23H2,1-3H3;3-5,7,10-13,18,22H,6,8-9,14-17,19-21H2,1-2H3,(H2,30,34);3-5,9-14,24H,6-8,15-18,20-22H2,1-2H3;3-5,9-12,17,21H,6-8,13-16,18-20H2,1-2H3;3-5,9-14,22,32H,6-8,15-21H2,1-2H3.
What are the key properties of 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one?
1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one has a molecular weight of 4166.64 g/mol, XLogP of 43.39, 80 rotatable bonds, 2 hydrogen bond donors, and 34 hydrogen bond acceptors.
Where does this data come from?
All data for 1-(cyclobutylmethyl)-8-(dimethylamino)-3-[(4-hydroxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-(dimethylamino)-3-[[4-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;3-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzamide;4-[[1-(cyclobutylmethyl)-8-(dimethylamino)-2-oxo-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]benzonitrile;1-(cyclobutylmethyl)-8-(dimethylamino)-8-phenyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-diazaspiro[4.5]decan-2-one;1-(cyclobutylmethyl)-8-[ethyl(methyl)amino]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-1-[(1-methoxycyclobutyl)methyl]-3-[(4-methoxyphenyl)methyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one;8-(dimethylamino)-3-[(4-methoxyphenyl)methyl]-1-[2-(oxan-4-yl)ethyl]-8-phenyl-1,3-diazaspiro[4.5]decan-2-one is sourced from PubChem (CID 159924297), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).