Molecular formula
C16H21NO5
459 compounds have this formula on CompoundList.
- Molar mass
- 307.35g/mol
- Monoisotopic mass
- 307.1420Da
- Atoms
- 43
- Elements
- 4
- Rings plus double bonds
- 7
The formula C16H21NO5 describes a molecule made of 16 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 5 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 × 1662.53%12.011 × 16 = 192.176 g/mol
- H Hydrogen × 216.89%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.56%14.007 × 1 = 14.007 g/mol
- O Oxygen × 526.03%15.999 × 5 = 79.995 g/mol
Look up another formula
Compounds with the formula C16H21NO5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 400 of 459 compounds
amino}-2-oxoethyl)benzoate chemical structure, C16H21NO5, CAS 2228911-76-8](/s/JAJJHAXNXGSEMZ-UHFFFAOYSA-N.svg)
Methyl 3-(1-{[(tert-butoxy)carbonyl](methyl)amino}-2-oxoethyl)benzoate
CAS 2228911-76-8C16H21NO5
![1-[(tert-Butoxy)carbonyl]-7-methoxy-1,2,3,4-tetrahydroquinoline-2-carboxylic acid chemical structure, C16H21NO5, CAS 2803826-72-2](/s/AYGIUPPNDIZNFR-UHFFFAOYSA-N.svg)
1-[(tert-Butoxy)carbonyl]-7-methoxy-1,2,3,4-tetrahydroquinoline-2-carboxylic acid
CAS 2803826-72-2C16H21NO5
![1-(5-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)cyclobutane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2229032-29-3](/s/KAFUJHCDAKSBNY-UHFFFAOYSA-N.svg)
1-(5-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)cyclobutane-1-carboxylic acid
CAS 2229032-29-3C16H21NO5
![1-(2-{[(tert-Butoxy)carbonyl]amino}-5-hydroxyphenyl)cyclobutane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2228349-70-8](/s/UEBNKVAWECNUDQ-UHFFFAOYSA-N.svg)
1-(2-{[(tert-Butoxy)carbonyl]amino}-5-hydroxyphenyl)cyclobutane-1-carboxylic acid
CAS 2228349-70-8C16H21NO5
![1-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)-3-hydroxycyclobutane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2228363-89-9](/s/QLQPGGFWVFCCKR-UHFFFAOYSA-N.svg)
1-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)-3-hydroxycyclobutane-1-carboxylic acid
CAS 2228363-89-9C16H21NO5
![tert-Butyl N-[2-(2,3-dihydro-1,4-benzodioxin-5-yl)-1-oxopropan-2-yl]carbamate chemical structure, C16H21NO5, CAS 2229414-34-8](/s/ONPORMAWRAZYFV-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-(2,3-dihydro-1,4-benzodioxin-5-yl)-1-oxopropan-2-yl]carbamate
CAS 2229414-34-8C16H21NO5
![4-[(Benzyloxy)carbonyl]-3,3-dimethyl-1,4-oxazepane-6-carboxylic acid chemical structure, C16H21NO5, CAS 2803859-76-7](/s/YJBQUKAPWICXTO-UHFFFAOYSA-N.svg)
4-[(Benzyloxy)carbonyl]-3,3-dimethyl-1,4-oxazepane-6-carboxylic acid
CAS 2803859-76-7C16H21NO5
![2-[1-(4-{[(tert-Butoxy)carbonyl]amino}-3-hydroxyphenyl)cyclopropyl]acetic acid chemical structure, C16H21NO5, CAS 2228950-30-7](/s/QXUVHFVLNLZPHK-UHFFFAOYSA-N.svg)
2-[1-(4-{[(tert-Butoxy)carbonyl]amino}-3-hydroxyphenyl)cyclopropyl]acetic acid
CAS 2228950-30-7C16H21NO5
![1-(4-{[(tert-Butoxy)carbonyl]amino}-2-methoxyphenyl)cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2229376-69-4](/s/KMGVHSZUJIEHIM-UHFFFAOYSA-N.svg)
1-(4-{[(tert-Butoxy)carbonyl]amino}-2-methoxyphenyl)cyclopropane-1-carboxylic acid
CAS 2229376-69-4C16H21NO5
![1-[(3-{[(tert-Butoxy)carbonyl]amino}-4-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2229322-06-7](/s/BQQWAUFEWZFEPU-UHFFFAOYSA-N.svg)
1-[(3-{[(tert-Butoxy)carbonyl]amino}-4-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid
CAS 2229322-06-7C16H21NO5
![2-[1-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclopropyl]-2-hydroxyacetic acid chemical structure, C16H21NO5, CAS 2228470-82-2](/s/GAYIKIDBOYGWNA-UHFFFAOYSA-N.svg)
2-[1-(3-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclopropyl]-2-hydroxyacetic acid
CAS 2228470-82-2C16H21NO5
![tert-Butyl N-[2,3-dimethoxy-5-(3-oxoprop-1-en-1-yl)phenyl]carbamate chemical structure, C16H21NO5, CAS 2229644-30-6](/s/AQRGYNVNMPATSA-VOTSOKGWSA-N.svg)
tert-Butyl N-[2,3-dimethoxy-5-(3-oxoprop-1-en-1-yl)phenyl]carbamate
CAS 2229644-30-6C16H21NO5
![2-(2-{[(tert-Butoxy)carbonyl]amino}-5-methoxyphenyl)cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2229094-73-7](/s/PBEXZIHULUOUCY-UHFFFAOYSA-N.svg)
2-(2-{[(tert-Butoxy)carbonyl]amino}-5-methoxyphenyl)cyclopropane-1-carboxylic acid
CAS 2229094-73-7C16H21NO5
![1-[(5-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2229203-16-9](/s/PEFVNDPOTSRIIZ-UHFFFAOYSA-N.svg)
1-[(5-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid
CAS 2229203-16-9C16H21NO5
![1-(4-{[(tert-Butoxy)carbonyl]amino}-3-hydroxyphenyl)cyclobutane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2228634-70-4](/s/KABWUTOFRIYQHY-UHFFFAOYSA-N.svg)
1-(4-{[(tert-Butoxy)carbonyl]amino}-3-hydroxyphenyl)cyclobutane-1-carboxylic acid
CAS 2228634-70-4C16H21NO5
![rac-(1R,2R)-2-(4-{[(tert-Butoxy)carbonyl]amino}-2-methoxyphenyl)cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2227747-48-8](/s/FPMCSUDNHQWXGD-NWDGAFQWSA-N.svg)
rac-(1R,2R)-2-(4-{[(tert-Butoxy)carbonyl]amino}-2-methoxyphenyl)cyclopropane-1-carboxylic acid
CAS 2227747-48-8C16H21NO5
![Methyl 3-(3-{[(tert-butoxy)carbonyl]amino}-4-methylphenyl)-3-oxopropanoate chemical structure, C16H21NO5, CAS 2229337-80-6](/s/ZHVWRLQUDRDLME-UHFFFAOYSA-N.svg)
Methyl 3-(3-{[(tert-butoxy)carbonyl]amino}-4-methylphenyl)-3-oxopropanoate
CAS 2229337-80-6C16H21NO5
![rac-(1R,2R)-2-(4-{[(tert-Butoxy)carbonyl]amino}-3-methoxyphenyl)cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2227812-54-4](/s/HNTNYGUSIZDFTA-WDEREUQCSA-N.svg)
rac-(1R,2R)-2-(4-{[(tert-Butoxy)carbonyl]amino}-3-methoxyphenyl)cyclopropane-1-carboxylic acid
CAS 2227812-54-4C16H21NO5
![1-(4-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)cyclobutane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2229251-76-5](/s/CELPDWZWMGRYHV-UHFFFAOYSA-N.svg)
1-(4-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)cyclobutane-1-carboxylic acid
CAS 2229251-76-5C16H21NO5
![2-[1-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclopropyl]-2-hydroxyacetic acid chemical structure, C16H21NO5, CAS 2229075-94-7](/s/PWOIPNJZXCOKNA-UHFFFAOYSA-N.svg)
2-[1-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclopropyl]-2-hydroxyacetic acid
CAS 2229075-94-7C16H21NO5
![1-[(4-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2229594-04-9](/s/RSLIGEQQXXSTHB-UHFFFAOYSA-N.svg)
1-[(4-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid
CAS 2229594-04-9C16H21NO5
![rac-(1R,2R)-2-(2-{[(tert-Butoxy)carbonyl]amino}-5-methoxyphenyl)cyclopropane-1-carboxylic acid chemical structure, C16H21NO5, CAS 2227898-71-5](/s/PBEXZIHULUOUCY-CMPLNLGQSA-N.svg)
rac-(1R,2R)-2-(2-{[(tert-Butoxy)carbonyl]amino}-5-methoxyphenyl)cyclopropane-1-carboxylic acid
CAS 2227898-71-5C16H21NO5
![tert-Butyl N-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)-1-oxopropan-2-yl]carbamate chemical structure, C16H21NO5, CAS 2229460-62-0](/s/ZNIBPTDXXLKJQZ-UHFFFAOYSA-N.svg)
tert-Butyl N-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)-1-oxopropan-2-yl]carbamate
CAS 2229460-62-0C16H21NO5
![Methyl 3-(4-{[(tert-butoxy)carbonyl]amino}-3-methylphenyl)-3-oxopropanoate chemical structure, C16H21NO5, CAS 2229615-16-9](/s/YBTFYISDLMGGSJ-UHFFFAOYSA-N.svg)
Methyl 3-(4-{[(tert-butoxy)carbonyl]amino}-3-methylphenyl)-3-oxopropanoate
CAS 2229615-16-9C16H21NO5
- 2-(5-{[(tert-Butoxy)carbonyl]amino}-2-methoxyphenyl)cyclopropane-1-carboxylic acid2229102-52-5C16H21NO5
- tert-Butyl N-[4,5-dimethoxy-2-(3-oxoprop-1-en-1-yl)phenyl]carbamate2229690-04-2C16H21NO5
- 2-{[(Prop-2-en-1-yloxy)carbonyl]amino}-3-[2-(propan-2-yloxy)phenyl]propanoic acid2803822-85-5C16H21NO5
- Methyl 2-{[(benzyloxy)carbonyl]amino}-1-hydroxycyclohexane-1-carboxylate2137485-12-0C16H21NO5
- (2R,3R)-1-[(Benzyloxy)carbonyl]-3-(tert-butoxy)azetidine-2-carboxylic acid2757833-03-5C16H21NO5
- 1-tert-Butyl 6-methyl 3-hydroxy-1,2,3,4-tetrahydroquinoline-1,6-dicarboxylate2757956-34-4C16H21NO5
- 2-(2-{[(tert-Butoxy)carbonyl]amino}-4-methoxyphenyl)cyclopropane-1-carboxylic acid2228575-60-6C16H21NO5
- 1-[(Benzyloxy)carbonyl]-4-ethoxypiperidine-4-carboxylic acid2282364-35-4C16H21NO5
- 1-(2-{[(tert-Butoxy)carbonyl]amino}-5-methoxyphenyl)cyclopropane-1-carboxylic acid2228986-57-8C16H21NO5
- tert-Butyl N-[5-(1-formylcyclopropyl)-2-hydroxy-3-methoxyphenyl]carbamate2228521-46-6C16H21NO5
- Methyl 2-(1-{[(tert-butoxy)carbonyl](methyl)amino}-2-oxoethyl)benzoate2229206-27-1C16H21NO5
- Methyl 1-{[(tert-butoxy)carbonyl]amino}-4-hydroxy-2,3-dihydro-1H-indene-2-carboxylate2413875-63-3C16H21NO5
- Methyl 5-{[(tert-butoxy)carbonyl](methyl)amino}-3-formyl-2-methylbenzoate2418651-16-6C16H21NO5
- 3-{[(tert-Butoxy)carbonyl]amino}-5-formyl-2,4,6-trimethylbenzoic acid2418720-46-2C16H21NO5
- Methyl 3-{[(tert-butoxy)carbonyl](methyl)amino}-5-formyl-2-methylbenzoate2418660-04-3C16H21NO5
- Methyl 3-{[(tert-butoxy)carbonyl](methyl)amino}-5-formyl-4-methylbenzoate2418676-51-2C16H21NO5
- tert-Butyl N-[2-(2,3-dihydro-1,4-benzodioxin-2-yl)-1-oxopropan-2-yl]carbamate2229033-15-0C16H21NO5
- tert-Butyl N-[(1S)-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-oxopropyl]carbamate2137144-06-8C16H21NO5
- Methyl 2-(2-{[(tert-butoxy)carbonyl]amino}-1-oxopropan-2-yl)benzoate2228214-78-4C16H21NO5
- Methyl 4-(1-{[(tert-butoxy)carbonyl]amino}-2-oxoethyl)-2-methylbenzoate2229361-69-5C16H21NO5
- tert-Butyl N-[1-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-oxoethyl]-N-methylcarbamate2228711-14-4C16H21NO5
- tert-Butyl N-[4,5-dimethoxy-2-(prop-2-enoyl)phenyl]carbamate2228217-46-5C16H21NO5
- 4-(1-{[(Benzyloxy)carbonyl]amino}ethyl)oxane-4-carboxylic acid2137595-52-7C16H21NO5
- 2-{[(Benzyloxy)carbonyl]amino}-1-hydroxy-4-methylcyclohexane-1-carboxylic acid2137472-36-5C16H21NO5
- 3-{[(Benzyloxy)carbonyl]amino}-2-(oxan-4-yl)propanoic acid2137761-52-3C16H21NO5
- 1-[(tert-Butoxy)carbonyl]-6-ethoxy-2,3-dihydro-1H-indole-2-carboxylic acid2137463-62-6C16H21NO5
- 2-(3-{[(Benzyloxy)carbonyl]amino}-4-ethyloxolan-3-yl)acetic acid2152048-26-3C16H21NO5
- 2-(3-{[(Benzyloxy)carbonyl]amino}-2,2-dimethyloxolan-3-yl)acetic acid2156787-04-9C16H21NO5
- 2-{[(Benzyloxy)carbonyl]amino}-4-cyclopropyl-4-methoxybutanoic acid2000484-76-2C16H21NO5
- 2-(3-{[(Benzyloxy)carbonyl]amino}-2,5-dimethyloxolan-3-yl)acetic acid2171745-84-7C16H21NO5
- 2-(3-{[(Benzyloxy)carbonyl]amino}-6-methyloxan-3-yl)acetic acid2159290-44-3C16H21NO5
- 3-{[(Benzyloxy)carbonyl]amino}-3-cyclopropyl-4-methoxybutanoic acid2160683-50-9C16H21NO5
- (3R)-3-{[(Benzyloxy)carbonyl]amino}-3-(oxan-2-yl)propanoic acid2137192-13-1C16H21NO5
- 3-(4-{[(Benzyloxy)carbonyl]amino}oxan-4-yl)propanoic acid2172215-98-2C16H21NO5
- 4-({[(Benzyloxy)carbonyl]amino}methyl)oxepane-4-carboxylic acid2137690-11-8C16H21NO5
- 1-(5-{[(tert-Butoxy)carbonyl]amino}-2-methoxyphenyl)cyclopropane-1-carboxylic acid2228289-52-7C16H21NO5
- rac-(1R,2R)-2-(2-{[(tert-Butoxy)carbonyl]amino}-4-methoxyphenyl)cyclopropane-1-carboxylic acid2227813-87-6C16H21NO5
- 2-[1-(4-{[(tert-Butoxy)carbonyl]amino}phenyl)cyclopropyl]-2-hydroxyacetic acid2228694-20-8C16H21NO5
- 2-[1-(4-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)cyclopropyl]acetic acid2229350-54-1C16H21NO5
- 2-(4-{[(tert-Butoxy)carbonyl]amino}-3-methoxyphenyl)cyclopropane-1-carboxylic acid2229560-72-7C16H21NO5
- 2-{[(Benzyloxy)carbonyl]amino}-2-(2-hydroxycyclohexyl)acetic acid94621-68-8C16H21NO5
- 2-[1-(2-{[(tert-Butoxy)carbonyl]amino}-5-hydroxyphenyl)cyclopropyl]acetic acid2228646-89-5C16H21NO5
- 1-(4-{[(tert-Butoxy)carbonyl]amino}phenyl)-3-hydroxycyclobutane-1-carboxylic acid2228813-86-1C16H21NO5
- 1-(2-{[(tert-Butoxy)carbonyl]amino}-4-methoxyphenyl)cyclopropane-1-carboxylic acid2229485-70-3C16H21NO5
- 1-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)-3-hydroxycyclobutane-1-carboxylic acid2229484-16-4C16H21NO5
- (3R)-3-{[(Benzyloxy)carbonyl]amino}-3-(3-methoxycyclobutyl)propanoic acid2136021-06-0C16H21NO5
- 3-(4-Acetylphenyl)-3-{[(tert-butoxy)carbonyl]amino}propanoic acid2383788-56-3C16H21NO5
- 2-(4-{[(tert-Butoxy)carbonyl]amino}-3,4-dihydro-2H-1-benzopyran-8-yl)acetic acid2385348-22-9C16H21NO5
- 4-{4-[(Benzyloxy)carbonyl]morpholin-2-yl}butanoic acid2580196-88-7C16H21NO5
- 3-[(4R)-3-[(Benzyloxy)carbonyl]-2,2-dimethyl-1,3-oxazolidin-4-yl]propanoic acid2580100-35-0C16H21NO5
- 1-tert-Butyl 7-methyl 5-hydroxy-1,2,3,4-tetrahydroquinoline-1,7-dicarboxylate2580215-89-8C16H21NO5
- 2-(4-{[(tert-Butoxy)carbonyl]amino}-3,4-dihydro-2H-1-benzopyran-4-yl)acetic acid2159673-53-5C16H21NO5
- 1-[(Benzyloxy)carbonyl]-5-(methoxymethyl)-5-methylpyrrolidine-3-carboxylic acid2580250-91-3C16H21NO5
- 6-{[(Benzyloxy)carbonyl]amino}-3,3-dimethyl-5-oxohexanoic acid2580251-59-6C16H21NO5
- 2-[4-({[(Benzyloxy)carbonyl]amino}methyl)oxan-4-yl]acetic acid2580217-80-5C16H21NO5
- 1-[(tert-Butoxy)carbonyl]-6-methoxy-1,2,3,4-tetrahydroquinoline-2-carboxylic acid2580185-46-0C16H21NO5
- rac-(2R,3S)-2-({[(tert-Butoxy)carbonyl]amino}methyl)-3-methyl-2,3-dihydro-1-benzofuran-5-carboxylic acid2580095-24-3C16H21NO5
- rac-(2R,4S)-4-{[(Benzyloxy)carbonyl]amino}-6,6-dimethyloxane-2-carboxylic acid2580100-56-5C16H21NO5
- (1S)-2-[(tert-Butoxy)carbonyl]-5-methoxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid2382237-87-6C16H21NO5
- 4-({[(Benzyloxy)carbonyl]amino}methyl)-4-hydroxycyclohexane-1-carboxylic acid2580223-20-5C16H21NO5
- 5-(2-{[(tert-Butoxy)carbonyl]amino}phenyl)-5-oxopentanoic acid2353473-16-0C16H21NO5
- 3-{[(tert-Butoxy)carbonyl]amino}-3-(4-hydroxyphenyl)cyclobutane-1-carboxylic acid2580242-94-8C16H21NO5
- 2-{4-[(Benzyloxy)carbonyl]-6,6-dimethylmorpholin-3-yl}acetic acid2386407-18-5C16H21NO5
- 5-(3-{[(Benzyloxy)carbonyl]amino}propyl)oxolane-2-carboxylic acid2639414-19-8C16H21NO5
- 4-[(Benzyloxy)carbonyl]-6,6-dimethyl-1,4-oxazepane-3-carboxylic acid2639406-99-6C16H21NO5
- 3-{[(Benzyloxy)carbonyl][(oxolan-2-yl)methyl]amino}propanoic acid2639459-06-4C16H21NO5
- 1-[(tert-Butoxy)carbonyl]-5-methoxy-2-methyl-2,3-dihydro-1H-indole-3-carboxylic acid2639457-33-1C16H21NO5
- rac-3-{[(1R,2R)-2-{[(benzyloxy)carbonyl]amino}cyclopentyl]oxy}propanoic acid2639391-44-7C16H21NO5
- 2-[(tert-Butoxy)carbonyl]-7-methoxy-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acid2639426-16-5C16H21NO5
- 2-({1-[(Benzyloxy)carbonyl]-4,4-dimethylpyrrolidin-3-yl}oxy)acetic acid2639416-50-3C16H21NO5
- 3-{[(Benzyloxy)carbonyl](oxan-4-yl)amino}propanoic acid2639422-95-8C16H21NO5
- 4-{[(Benzyloxy)carbonyl]amino}-3,3-dimethyloxane-4-carboxylic acid2680852-60-0C16H21NO5
- rac-Benzyl (8R,9S)-8,9-dihydroxy-6-oxa-2-azaspiro[4.5]decane-2-carboxylate2731012-68-1C16H21NO5
- rac-Benzyl N-[(3R,4S)-4-hydroxy-1,8-dioxaspiro[4.5]decan-3-yl]carbamate2679948-50-4C16H21NO5
- rac-Benzyl (3R,4S)-3,4-dihydroxy-8-oxa-1-azaspiro[4.5]decane-1-carboxylate2679817-86-6C16H21NO5
- 2-{[(Benzyloxy)carbonyl]amino}-2-(1-methoxycyclopentyl)acetic acid2000488-36-6C16H21NO5
Frequently asked questions
What is the molar mass of C16H21NO5?
The molar mass of C16H21NO5 is 307.35 g/mol, calculated from standard atomic weights for 16 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 5 oxygen atoms. The monoisotopic mass is 307.1420 Da.
How many compounds have the formula C16H21NO5?
CompoundList lists 459 compounds with the molecular formula C16H21NO5, including Methyl 3-(1-{[(tert-butoxy)carbonyl](methyl)amino}-2-oxoethyl)benzoate, 1-[(tert-Butoxy)carbonyl]-7-methoxy-1,2,3,4-tetrahydroquinoline-2-carboxylic acid, 1-(5-{[(tert-Butoxy)carbonyl]amino}-2-hydroxyphenyl)cyclobutane-1-carboxylic acid. 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 C16H21NO5?
C16H21NO5 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.