Molecular formula
C21H21NO3
253 compounds have this formula on CompoundList.
- Molar mass
- 335.40g/mol
- Monoisotopic mass
- 335.1521Da
- Atoms
- 46
- Elements
- 4
- Rings plus double bonds
- 12
The formula C21H21NO3 describes a molecule made of 21 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 × 2175.20%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 216.31%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.18%14.007 × 1 = 14.007 g/mol
- O Oxygen × 314.31%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H21NO3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 201 to 253 of 253 compounds
(9H-Fluoren-9-yl)methyl 2-ethenylmorpholine-4-carboxylate
CAS 2680660-10-8C21H21NO3
![Benzyl 1-oxo-1,3-dihydrospiro[indene-2,4'-piperidine]-1'-carboxylate chemical structure, C21H21NO3, CAS 2680663-94-7](/s/SSYFCAGCYLPBCN-UHFFFAOYSA-N.svg)
Benzyl 1-oxo-1,3-dihydrospiro[indene-2,4'-piperidine]-1'-carboxylate
CAS 2680663-94-7C21H21NO3
![Benzyl N-[(1S)-3-hydroxy-1-(naphthalen-1-yl)propyl]carbamate chemical structure, C21H21NO3, CAS 2679860-18-3](/s/HBAPZSPMFJTEDF-FQEVSTJZSA-N.svg)
Benzyl N-[(1S)-3-hydroxy-1-(naphthalen-1-yl)propyl]carbamate
CAS 2679860-18-3C21H21NO3
(9H-Fluoren-9-yl)methyl 3-hydroxy-3-(prop-2-en-1-yl)azetidine-1-carboxylate
CAS 2281147-42-8C21H21NO3
![(9H-Fluoren-9-yl)methyl 1-(hydroxymethyl)-5-azaspiro[2.3]hexane-5-carboxylate chemical structure, C21H21NO3, CAS 2763905-99-1](/s/NQGPBLNACOPXAA-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 1-(hydroxymethyl)-5-azaspiro[2.3]hexane-5-carboxylate
CAS 2763905-99-1C21H21NO3
![(9H-Fluoren-9-yl)methyl 6-hydroxy-3-azabicyclo[3.2.0]heptane-3-carboxylate chemical structure, C21H21NO3, CAS 2763992-94-3](/s/ADNDALJRLKULSR-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 6-hydroxy-3-azabicyclo[3.2.0]heptane-3-carboxylate
CAS 2763992-94-3C21H21NO3
(9H-Fluoren-9-yl)methyl N-(3-hydroxypropyl)-N-(prop-2-yn-1-yl)carbamate
CAS 2764000-43-1C21H21NO3
![(9H-Fluoren-9-yl)methyl N-[(1S,4R)-4-(hydroxymethyl)cyclopent-2-en-1-yl]carbamate chemical structure, C21H21NO3, CAS 2763886-65-1](/s/HMFBLPYBIMTHCO-LSDHHAIUSA-N.svg)
(9H-Fluoren-9-yl)methyl N-[(1S,4R)-4-(hydroxymethyl)cyclopent-2-en-1-yl]carbamate
CAS 2763886-65-1C21H21NO3
![rac-(9H-Fluoren-9-yl)methyl (1R,6R)-1-hydroxy-3-azabicyclo[4.1.0]heptane-3-carboxylate chemical structure, C21H21NO3, CAS 2764019-42-1](/s/CCHIBZWTLGANCR-SZNDQCEHSA-N.svg)
rac-(9H-Fluoren-9-yl)methyl (1R,6R)-1-hydroxy-3-azabicyclo[4.1.0]heptane-3-carboxylate
CAS 2764019-42-1C21H21NO3
![(9H-Fluoren-9-yl)methyl N-[3-(hydroxymethyl)bicyclo[1.1.1]pentan-1-yl]carbamate chemical structure, C21H21NO3, CAS 2763965-03-1](/s/AGXOLGZZXSQULA-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl N-[3-(hydroxymethyl)bicyclo[1.1.1]pentan-1-yl]carbamate
CAS 2763965-03-1C21H21NO3
(9H-Fluoren-9-yl)methyl N-(2-hydroxyhex-5-yn-1-yl)carbamate
CAS 2158078-54-5C21H21NO3
![(9H-Fluoren-9-yl)methyl 1-(hydroxymethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate chemical structure, C21H21NO3, CAS 2300767-76-2](/s/CGBFQSLQXGPIDV-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 1-(hydroxymethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate
CAS 2300767-76-2C21H21NO3
![(9H-Fluoren-9-yl)methyl (1R,5S,6R)-6-(hydroxymethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate chemical structure, C21H21NO3, CAS 2763885-45-4](/s/ORIFCQZJPWGCQG-DFNIBXOVSA-N.svg)
(9H-Fluoren-9-yl)methyl (1R,5S,6R)-6-(hydroxymethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate
CAS 2763885-45-4C21H21NO3
(9H-Fluoren-9-yl)methyl 4-(hydroxymethyl)-1,2,3,6-tetrahydropyridine-1-carboxylate
CAS 2764007-17-0C21H21NO3
![(9H-Fluoren-9-yl)methyl 5-hydroxy-2-azaspiro[3.3]heptane-2-carboxylate chemical structure, C21H21NO3, CAS 2764019-41-0](/s/IEYCKKCYZLOOKQ-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 5-hydroxy-2-azaspiro[3.3]heptane-2-carboxylate
CAS 2764019-41-0C21H21NO3
![rac-(9H-Fluoren-9-yl)methyl (1R,4S,6R)-6-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate chemical structure, C21H21NO3, CAS 2763911-41-5](/s/KDKNURIZFNRVPA-CJMONDIMSA-N.svg)
rac-(9H-Fluoren-9-yl)methyl (1R,4S,6R)-6-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate
CAS 2763911-41-5C21H21NO3
![9H-Fluoren-9-ylmethyl 7-hydroxy-5-azaspiro[2.4]heptane-5-carboxylate chemical structure, C21H21NO3, CAS 2763912-46-3](/s/KSTFLINMDFEKKD-UHFFFAOYSA-N.svg)
9H-Fluoren-9-ylmethyl 7-hydroxy-5-azaspiro[2.4]heptane-5-carboxylate
CAS 2763912-46-3C21H21NO3
(9H-Fluoren-9-yl)methyl 2-(hydroxymethyl)-1,2,3,6-tetrahydropyridine-1-carboxylate
CAS 2763928-46-5C21H21NO3
![(9H-Fluoren-9-yl)methyl 4-(hydroxymethyl)-2-azabicyclo[2.1.1]hexane-2-carboxylate chemical structure, C21H21NO3, CAS 2764020-50-8](/s/QAQZGCLWZBMVQQ-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 4-(hydroxymethyl)-2-azabicyclo[2.1.1]hexane-2-carboxylate
CAS 2764020-50-8C21H21NO3
(9H-Fluoren-9-yl)methyl 2-(hydroxymethyl)-2-methyl-2,5-dihydro-1H-pyrrole-1-carboxylate
CAS 2763920-23-4C21H21NO3
![(9H-Fluoren-9-yl)methyl 7-hydroxy-4-azaspiro[2.4]heptane-4-carboxylate chemical structure, C21H21NO3, CAS 2764007-27-2](/s/PHEJFEFCONAHPN-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 7-hydroxy-4-azaspiro[2.4]heptane-4-carboxylate
CAS 2764007-27-2C21H21NO3
(9H-Fluoren-9-yl)methyl 6-(hydroxymethyl)-1,2,3,6-tetrahydropyridine-1-carboxylate
CAS 2764007-59-0C21H21NO3
![(9H-Fluoren-9-yl)methyl 6-hydroxy-2-azaspiro[3.3]heptane-2-carboxylate chemical structure, C21H21NO3, CAS 2295204-87-2](/s/LIYBSLRDWIKYNZ-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 6-hydroxy-2-azaspiro[3.3]heptane-2-carboxylate
CAS 2295204-87-2C21H21NO3
![(9H-Fluoren-9-yl)methyl 1-(hydroxymethyl)-2-azabicyclo[2.1.1]hexane-2-carboxylate chemical structure, C21H21NO3, CAS 2001758-13-8](/s/IFGBSDFBSWSWPF-UHFFFAOYSA-N.svg)
(9H-Fluoren-9-yl)methyl 1-(hydroxymethyl)-2-azabicyclo[2.1.1]hexane-2-carboxylate
CAS 2001758-13-8C21H21NO3
- (9H-Fluoren-9-yl)methyl N-{5-hydroxyspiro[2.3]hexan-1-yl}carbamate2286169-60-4C21H21NO3
- rac-(9H-Fluoren-9-yl)methyl (1R,5R,6R)-6-hydroxy-2-azabicyclo[3.2.0]heptane-2-carboxylate2763965-33-7C21H21NO3
- rac-(9H-Fluoren-9-yl)methyl (1R,5R,6S)-6-hydroxy-2-azabicyclo[3.2.0]heptane-2-carboxylate2763966-48-7C21H21NO3
- rac-(9H-Fluoren-9-yl)methyl (3R,4R)-3-ethenyl-4-hydroxypyrrolidine-1-carboxylate2764009-90-5C21H21NO3
- (9H-Fluoren-9-yl)methyl (1S,5S)-1-(hydroxymethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate2763886-23-1C21H21NO3
- rac-(9H-Fluoren-9-yl)methyl (1R,6R)-6-hydroxy-3-azabicyclo[4.1.0]heptane-3-carboxylate2764008-06-0C21H21NO3
- (9H-Fluoren-9-yl)methyl (1R,5R)-1-(hydroxymethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate2763887-50-7C21H21NO3
- (9H-Fluoren-9-yl)methyl 6-hydroxy-3-azabicyclo[3.1.1]heptane-3-carboxylate2764002-72-2C21H21NO3
- (9H-Fluoren-9-yl)methyl N-(1-hydroxyhex-4-yn-2-yl)carbamate2285390-47-6C21H21NO3
- (9H-Fluoren-9-yl)methyl N-[1-(hydroxymethyl)cyclopent-3-en-1-yl]carbamate2764012-15-7C21H21NO3
- (9H-Fluoren-9-yl)methyl N-(but-3-yn-1-yl)-N-(2-hydroxyethyl)carbamate2764014-43-7C21H21NO3
- rac-(9H-Fluoren-9-yl)methyl (1R,4R,5S)-5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate2764005-30-1C21H21NO3
- (9H-Fluoren-9-yl)methyl 5-hydroxy-2-azabicyclo[4.1.0]heptane-2-carboxylate2770546-15-9C21H21NO3
- (9H-Fluoren-9-yl)methyl N-[3-(prop-2-yn-1-yloxy)propyl]carbamate2770486-61-6C21H21NO3
- (9H-Fluoren-9-yl)methyl 3-ethenylmorpholine-4-carboxylate2770533-38-3C21H21NO3
- (9H-Fluoren-9-yl)methyl N-(4-methoxypent-1-yn-3-yl)carbamate2770546-35-3C21H21NO3
- (9H-Fluoren-9-yl)methyl N-(2-methoxyethyl)-N-(prop-2-yn-1-yl)carbamate2770498-81-0C21H21NO3
- (9H-Fluoren-9-yl)methyl N-(1-methoxypent-4-yn-2-yl)carbamate2155573-32-1C21H21NO3
- (9H-Fluoren-9-yl)methyl 3-ethenyl-3-hydroxypyrrolidine-1-carboxylate2770525-78-3C21H21NO3
- (9H-Fluoren-9-yl)methyl 6-methylidene-1,4-oxazepane-4-carboxylate2770494-37-4C21H21NO3
- (9H-Fluoren-9-yl)methyl (1R,3r,5S)-3-hydroxy-6-azabicyclo[3.1.1]heptane-6-carboxylate2920087-62-1C21H21NO3
- 6-(Benzyloxy)-3',4'-dimethoxy-[1,1'-biphenyl]-3-amine31965-45-4C21H21NO3
- 7-Methoxy-8-[4-[(tetrahydro-2H-pyran-2-yl)oxy]phenyl]quinoline1401818-88-9C21H21NO3
- Methyl 4-((3-ethyl-2-methylquinolin-4-yl)(hydroxy)methyl)benzoate461666-25-1C21H21NO3
- (9H-Fluoren-9-yl)methyl 3-(1-hydroxycyclopropyl)azetidine-1-carboxylate2991922-51-9C21H21NO3
- Ethyl 4-[(7-ethyl-3-formylindol-1-yl)methyl]benzoate593237-06-0C21H21NO3
- 4-(Ethoxymethylidene)-2-(4-propan-2-ylphenyl)isoquinoline-1,3-dioneC21H21NO3
- 3-Methoxy-N-[(4-methoxyphenyl)methyl]-N-methyl-2-naphthalenecarboxamide2216079-21-7C21H21NO3
- Ethyl 2-(2-hydroxynaphthalen-1-yl)-2-(p-tolylamino)acetate1885097-21-1C21H21NO3
Frequently asked questions
What is the molar mass of C21H21NO3?
The molar mass of C21H21NO3 is 335.40 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 3 oxygen atoms. The monoisotopic mass is 335.1521 Da.
How many compounds have the formula C21H21NO3?
CompoundList lists 253 compounds with the molecular formula C21H21NO3, including (9H-Fluoren-9-yl)methyl 2-ethenylmorpholine-4-carboxylate, Benzyl 1-oxo-1,3-dihydrospiro[indene-2,4'-piperidine]-1'-carboxylate, Benzyl N-[(1S)-3-hydroxy-1-(naphthalen-1-yl)propyl]carbamate. 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 C21H21NO3?
C21H21NO3 has a degree of unsaturation of 12. 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.