Molecular formula
C16H21NO3
763 compounds have this formula on CompoundList.
- Molar mass
- 275.35g/mol
- Monoisotopic mass
- 282.1961Da
- Atoms
- 41
- Elements
- 4
- Rings plus double bonds
- 7
The formula C16H21NO3 describes a molecule made of 16 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 3 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 1669.79%12.011 × 16 = 192.176 g/mol
- H Hydrogen × 217.69%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 15.09%14.007 × 1 = 14.007 g/mol
- O Oxygen × 317.43%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C16H21NO3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 501 to 600 of 763 compounds
![4-{2-[(2-Ethyl-1,3-dioxolan-2-yl)methyl]anilino}but-3-en-2-one chemical structure, C16H21NO3, CAS 830324-09-9](/s/IIUGLJXHNBUBKE-UHFFFAOYSA-N.svg)
4-{2-[(2-Ethyl-1,3-dioxolan-2-yl)methyl]anilino}but-3-en-2-one
CAS 830324-09-9C16H21NO3
2-Nitro-4,5,5a,6,7,8,8a,9,10,10a,10b,10c-dodecahydropyren-1(2H)-one
CAS 80267-71-6C16H21NO3
Benzyl (2R)-2-cyanoheptan-2-yl carbonate
CAS 917973-17-2C16H21NO3
N-(4-Ethoxy-3-methyl-5-propanoylphenyl)but-2-enamide
CAS 90257-62-8C16H21NO3
![(2R)-1-Cyano-3-[(2,4,6-trimethylphenyl)methoxy]propan-2-yl acetate chemical structure, C16H21NO3, CAS 922735-38-4](/s/FPTSARJCAJVXIP-OAHLLOKOSA-N.svg)
(2R)-1-Cyano-3-[(2,4,6-trimethylphenyl)methoxy]propan-2-yl acetate
CAS 922735-38-4C16H21NO3
3-(4-tert-Butylphenyl)-3-(3-nitroprop-2-en-1-yl)oxetane
CAS 922501-08-4C16H21NO3
Methyl 3-(1-benzylpiperidin-2-yl)-3-oxopropanoate
CAS 1420850-43-6C16H21NO3
Methyl 3-(1-benzylpiperidin-3-yl)-3-oxopropanoate
CAS 1420986-90-8C16H21NO3
Methyl 3-(1-benzylpiperidin-4-yl)-3-oxopropanoate
CAS 1420900-16-8C16H21NO3
tert-Butyl 4-formyl-2-phenylpyrrolidine-1-carboxylate
CAS 1279817-41-2C16H21NO3
tert-Butyl 2-((2-ethyl-1H-indol-4-yl)oxy)acetate
CAS 1076197-42-6C16H21NO3
![Ethyl spiro[isochroman-1,4'-piperidine]-1'-carboxylate chemical structure, C16H21NO3, CAS 173944-51-9](/s/NYMNDKGBFJCEQT-UHFFFAOYSA-N.svg)
Ethyl spiro[isochroman-1,4'-piperidine]-1'-carboxylate
CAS 173944-51-9C16H21NO3
Ramelteon impurity 38
CAS 1260675-80-6C16H21NO3
tert-Butyl 8-acetyl-3,4-dihydroquinoline-1(2H)-carboxylate
CAS 1784051-24-6C16H21NO3
tert-Butyl 2-benzyl-3-oxopyrrolidine-1-carboxylate
CAS 1824247-87-1C16H21NO3
![Propanoic acid, 3-[2-buten-1-yl(1-phenylethyl)amino]-3-oxo-, methyl ester chemical structure, C16H21NO3](/s/IOANMNHZTFPBBV-UHFFFAOYSA-N.svg)
Propanoic acid, 3-[2-buten-1-yl(1-phenylethyl)amino]-3-oxo-, methyl ester
C16H21NO3
tert-Butyl (2S,5R)-2-formyl-5-phenylpyrrolidine-1-carboxylate
CAS 3079381-21-5C16H21NO3
3,4-Dimethyl-2-(2-oxo-2-(piperidin-1-yl)ethoxy)benzaldehyde
CAS 1427023-68-4C16H21NO3
![rac-Benzyl N-[(1R,2S,3R,4S)-3-(hydroxymethyl)bicyclo[2.2.1]heptan-2-yl]carbamate chemical structure, C16H21NO3, CAS 351209-32-0](/s/HVRWSLIHBIFGMV-CBBWQLFWSA-N.svg)
rac-Benzyl N-[(1R,2S,3R,4S)-3-(hydroxymethyl)bicyclo[2.2.1]heptan-2-yl]carbamate
CAS 351209-32-0C16H21NO3
tert-Butyl 5-acetyl-1,2,3,4-tetrahydroisoquinoline-2-carboxylate
CAS 1892732-73-8C16H21NO3
Ethyl 1-(1-methoxypropan-2-yl)-2-methylindole-3-carboxylate
CAS 1450659-96-7C16H21NO3
![N-[[2-(1,3-Dioxolan-2-yl)phenyl]methyl]-N-ethylcyclopropanecarboxamide chemical structure, C16H21NO3, CAS 1415042-64-6](/s/FZASATNXFQYULG-UHFFFAOYSA-N.svg)
N-[[2-(1,3-Dioxolan-2-yl)phenyl]methyl]-N-ethylcyclopropanecarboxamide
CAS 1415042-64-6C16H21NO3
1-(2,2-Dimethyl-3,4-dihydrochromen-6-yl)pyrrolidine-3-carboxylic acid
CAS 1709861-17-5C16H21NO3
1-(2,2-Dimethyl-3,4-dihydrochromen-7-yl)pyrrolidine-3-carboxylic acid
CAS 1709861-21-1C16H21NO3
- tert-Butyl (1S)-5-formyl-1-methyl-3,4-dihydro-1H-isoquinoline-2-carboxylate1904662-38-9C16H21NO3
- Methyl9-benzyl-3-oxa-9-azabicyclo[3.3.1]nonane-7-carboxylate1638765-39-5C16H21NO3
- Benzyl 4-ethyl-4-formylpiperidine-1-carboxylate1205751-15-0C16H21NO3
- tert-Butyl 6'-hydroxy-2',3'-dihydro-1'H-spiro[cyclopropane-1,4'-isoquinoline]-2'-carboxylate1935186-98-3C16H21NO3
- tert-Butyl N-(8-vinylisochroman-4-yl)carbamate2179091-00-8C16H21NO3
- Methyl 9-benzyl-3-oxa-9-azabicyclo[3.3.1]nonane-7-carboxylate2386954-47-6C16H21NO3
- tert-Butyl methyl(3-oxo-1-phenylcyclobutyl)carbamate2267307-49-1C16H21NO3
- 1-(3-Methoxyphenyl)-3-(2-methylpropanoyl)piperidin-2-one2059926-89-3C16H21NO3
- 1-(2-Methoxyphenyl)-3-(2-methylpropanoyl)piperidin-2-one2060038-13-1C16H21NO3
- 1-(4-Ethoxyphenyl)-3-propanoylpiperidin-2-one2060038-14-2C16H21NO3
- 1-(4-Methoxyphenyl)-3-(2-methylpropanoyl)piperidin-2-one2060058-05-9C16H21NO3
- 1-(2-Ethoxyphenyl)-3-propanoylpiperidin-2-one2060033-75-0C16H21NO3
- (2S,3S)-1-Boc-3-phenylpyrrolidine-2-carbaldehyde1187592-02-4C16H21NO3
- Benzyl 4-cyclopropyl-4-hydroxypiperidine-1-carboxylate2680849-20-9C16H21NO3
- Benzyl N-(2-cyclohexyl-2-oxoethyl)carbamate2013433-59-3C16H21NO3
- tert-Butyl 5-propanoyl-2,3-dihydro-1H-isoindole-2-carboxylate1999196-18-7C16H21NO3
- tert-Butyl 5-acetyl-3,4-dihydroquinoline-1(2H)-carboxylate1997828-80-4C16H21NO3
- Methyl 5-oxo-1-{[4-(propan-2-yl)phenyl]methyl}pyrrolidine-3-carboxylate2741930-38-9C16H21NO3
- Methyl (2R,4S)-2-allyl-4-benzyloxy-pyrrolidine-1-carboxylate2580984-20-7C16H21NO3
- tert-Butyl ethyl(3-ethynyl-5-methoxyphenyl)carbamate2989074-57-7C16H21NO3
- 3-(7-(Methoxymethoxy)-2,2-dimethylchroman-6-yl)propanenitrile2640655-34-9C16H21NO3
- tert-Butyl (2-(4-ethynylphenoxy)ethyl)(methyl)carbamate2989216-44-4C16H21NO3
- tert-Butyl 4-[(oxiran-2-yl)methyl]-2,3-dihydro-1H-isoindole-2-carboxylate2138282-75-2C16H21NO3
- Ethyl 1-(2-formyl-3-methylphenyl)piperidine-4-carboxylate2137579-30-5C16H21NO3
- Ethyl 1-(2-formyl-3-methylphenyl)piperidine-3-carboxylate2137569-02-7C16H21NO3
- Benzyl N-(6-methyl-3-oxohept-6-en-2-yl)carbamate2017216-70-3C16H21NO3
- Benzyl N-(4-methyl-3-oxohept-6-en-2-yl)carbamate2137802-27-6C16H21NO3
- Benzyl N-(5-methylidene-3-oxoheptan-2-yl)carbamate1999349-17-5C16H21NO3
- Benzyl N-(6-methyl-2-oxohept-5-en-1-yl)carbamate2137631-96-8C16H21NO3
- tert-Butyl N-benzyl-N-(2-oxobut-3-en-1-yl)carbamate2137576-96-4C16H21NO3
- 4-Phenyl-2-(piperidin-4-yl)oxolane-3-carboxylic acid2138224-16-3C16H21NO3
- Methyl 2-[4-(3,5-dimethylphenyl)piperidin-1-yl]-2-oxoacetate2137563-23-4C16H21NO3
- Methyl 7-methyl-2-[2-methyl-1-(methylamino)propyl]-1-benzofuran-5-carboxylate2138516-95-5C16H21NO3
- Benzyl N-({2-hydroxybicyclo[2.2.1]heptan-1-yl}methyl)carbamate2172462-11-0C16H21NO3
- tert-Butyl 2,2-dimethyl-1aH,2H,3H,7bH-oxireno[2,3-c]quinoline-3-carboxylate2219374-72-6C16H21NO3
- tert-Butyl N-{3-oxatricyclo[6.4.0.0,2,4]dodeca-1(12),8,10-trien-11-yl}carbamate2219369-75-0C16H21NO3
- tert-Butyl 1-(2-methylphenyl)-6-oxa-3-azabicyclo[3.1.0]hexane-3-carboxylate2219368-47-3C16H21NO3
- tert-Butyl N-(2-{1aH,6H,6aH-indeno[1,2-b]oxiren-1a-yl}ethyl)carbamate2219408-94-1C16H21NO3
- 1-(4-Benzylmorpholin-2-yl)cyclobutane-1-carboxylic acid2228268-87-7C16H21NO3
- tert-Butyl N-[1-(2,3-dihydro-1H-inden-5-yl)-2-oxoethyl]carbamate2228697-45-6C16H21NO3
- tert-Butyl N-[1-(2,3-dihydro-1H-inden-1-yl)-2-oxoethyl]carbamate2229149-50-0C16H21NO3
- tert-Butyl N-[1-(2,3-dihydro-1H-inden-2-yl)-2-oxoethyl]carbamate2228342-74-1C16H21NO3
- tert-Butyl N-[1-(3-cyclopropylphenyl)-2-oxoethyl]carbamate2228944-47-4C16H21NO3
- tert-Butyl N-[2-(but-3-yn-2-yl)-4-methoxyphenyl]carbamate2228714-03-0C16H21NO3
- tert-Butyl N-[4-(but-3-yn-2-yl)-3-methoxyphenyl]carbamate2229216-94-6C16H21NO3
- tert-Butyl N-[2-(but-3-yn-2-yl)-5-methoxyphenyl]carbamate2229490-39-3C16H21NO3
- tert-Butyl N-[4-(but-3-yn-2-yl)-2-methoxyphenyl]carbamate2228812-90-4C16H21NO3
- tert-Butyl N-(3-methyl-1-oxo-4-phenylbut-3-en-2-yl)carbamate2229662-35-3C16H21NO3
- tert-Butyl N-[3-(but-3-yn-1-yl)-4-methoxyphenyl]carbamate2229605-64-3C16H21NO3
- tert-Butyl N-[2-(but-3-yn-1-yl)-5-methoxyphenyl]carbamate2229086-58-0C16H21NO3
- tert-Butyl N-[2-oxo-1-(1-phenylcyclopropyl)ethyl]carbamate2229302-26-3C16H21NO3
- tert-Butyl N-[3-(but-3-yn-2-yl)-4-methoxyphenyl]carbamate2229424-66-0C16H21NO3
- tert-Butyl N-[2-(but-3-yn-1-yl)-4-methoxyphenyl]carbamate2229539-03-9C16H21NO3
- tert-Butyl N-[3-hydroxy-4-(2-methylbut-3-yn-2-yl)phenyl]carbamate2229431-17-6C16H21NO3
- tert-Butyl N-[4-hydroxy-2-(2-methylbut-3-yn-2-yl)phenyl]carbamate2228558-96-9C16H21NO3
- tert-Butyl N-[4-hydroxy-3-(2-methylbut-3-yn-2-yl)phenyl]carbamate2228768-09-8C16H21NO3
- tert-Butyl N-(2-methyl-1-oxo-4-phenylbut-3-en-2-yl)carbamate2229663-03-8C16H21NO3
- tert-Butyl N-[4-(but-3-yn-1-yl)-3-methoxyphenyl]carbamate2229134-31-8C16H21NO3
- tert-Butyl N-[(1-formylcyclopropyl)(phenyl)methyl]carbamate2228546-24-3C16H21NO3
- Benzyl 6-oxa-2-azaspiro[3.6]decane-2-carboxylate2803846-85-5C16H21NO3
- 2-Benzyl-4-hydroxy-9-oxa-2-azaspiro[5.5]undecan-1-one2137677-18-8C16H21NO3
- tert-Butyl 1-phenyl-7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylate2219371-83-0C16H21NO3
- Methyl 1-benzyl-3-[(oxiran-2-yl)methyl]pyrrolidine-3-carboxylate2138151-03-6C16H21NO3
- tert-Butyl N-[4-(1-formylcyclopropyl)-2-methylphenyl]carbamate2229520-62-9C16H21NO3
- tert-Butyl N-[2-hydroxy-5-(2-methylbut-3-yn-2-yl)phenyl]carbamate2228351-85-5C16H21NO3
- tert-Butyl N-[5-(1-formylcyclopropyl)-2-methylphenyl]carbamate2229617-66-5C16H21NO3
- tert-Butyl N-[1-(4-cyclopropylphenyl)-2-oxoethyl]carbamate2228487-76-9C16H21NO3
- tert-Butyl N-methyl-N-(1-oxo-4-phenylbut-3-en-2-yl)carbamate2229683-12-7C16H21NO3
- 8-Benzyl-1-oxa-8-azaspiro[4.5]decane-4-carboxylic acid2137802-73-2C16H21NO3
- tert-Butyl N-[2-methyl-5-(3-oxobut-1-en-1-yl)phenyl]carbamate2229683-88-7C16H21NO3
- tert-Butyl N-[3-(1-acetylcyclopropyl)phenyl]carbamate2229145-67-7C16H21NO3
- tert-Butyl N-[4-(1-acetylcyclopropyl)phenyl]carbamate2008471-05-2C16H21NO3
- tert-Butyl 5-(2-hydroxyphenyl)-1,2,3,6-tetrahydropyridine-1-carboxylate2413886-40-3C16H21NO3
- tert-Butyl 3'-hydroxy-1',3'-dihydrospiro[cyclobutane-1,2'-indole]-1'-carboxylate2580237-32-5C16H21NO3
- tert-Butyl N-[(1R)-1-(2-hydroxyphenyl)ethyl]-N-(prop-2-yn-1-yl)carbamate2580113-87-5C16H21NO3
- Benzyl N-[(1R,3R,5S,8S)-8-hydroxybicyclo[3.2.1]octan-3-yl]carbamate1036897-62-7C16H21NO3
Frequently asked questions
What is the molar mass of C16H21NO3?
The molar mass of C16H21NO3 is 275.35 g/mol, calculated from standard atomic weights for 16 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 3 oxygen atoms. The monoisotopic mass is 282.1961 Da.
How many compounds have the formula C16H21NO3?
CompoundList lists 763 compounds with the molecular formula C16H21NO3, including 4-{2-[(2-Ethyl-1,3-dioxolan-2-yl)methyl]anilino}but-3-en-2-one, 2-Nitro-4,5,5a,6,7,8,8a,9,10,10a,10b,10c-dodecahydropyren-1(2H)-one, Benzyl (2R)-2-cyanoheptan-2-yl carbonate. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C16H21NO3?
C16H21NO3 has a degree of unsaturation of 7. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.