Molecular formula
C21H23NO4
409 compounds have this formula on CompoundList.
- Molar mass
- 353.42g/mol
- Monoisotopic mass
- 363.2255Da
- Atoms
- 49
- Elements
- 4
- Rings plus double bonds
- 11
The formula C21H23NO4 describes a molecule made of 21 carbon atoms, 23 hydrogen atoms, 1 nitrogen atom and 4 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 × 2171.37%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 236.56%1.008 × 23 = 23.184 g/mol
- N Nitrogen × 13.96%14.007 × 1 = 14.007 g/mol
- O Oxygen × 418.11%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H23NO4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 400 of 409 compounds
![3-{[(Benzyloxy)carbonyl]amino}-1-(3,5-dimethylphenyl)cyclobutane-1-carboxylic acid chemical structure, C21H23NO4, CAS 2172524-73-9](/s/XGPSNYXLPOUAQI-UHFFFAOYSA-N.svg)
3-{[(Benzyloxy)carbonyl]amino}-1-(3,5-dimethylphenyl)cyclobutane-1-carboxylic acid
CAS 2172524-73-9C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,4-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227678-77-3](/s/WSQXQJRAKTYCIW-RBUKOAKNSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,4-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227678-77-3C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,3-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227643-45-8](/s/MSFQTZXQUDGTPW-RBUKOAKNSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,3-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227643-45-8C21H23NO4
![rac-(1R,2R)-1-{[(Benzyloxy)carbonyl]amino}-4,4-dimethyl-1,2,3,4-tetrahydronaphthalene-2-carboxylic acid chemical structure, C21H23NO4, CAS 2227768-56-9](/s/FDHBTSTXOQSXCF-FUHWJXTLSA-N.svg)
rac-(1R,2R)-1-{[(Benzyloxy)carbonyl]amino}-4,4-dimethyl-1,2,3,4-tetrahydronaphthalene-2-carboxylic acid
CAS 2227768-56-9C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,5-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227901-39-3](/s/NDDFGJVAQNIPJM-RBUKOAKNSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,5-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227901-39-3C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(3,4-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227699-47-8](/s/OZXVDEDMZDKTAP-RBUKOAKNSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(3,4-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227699-47-8C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2-ethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227754-26-7](/s/MEMMEPXPQUPGSO-RBUKOAKNSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2-ethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227754-26-7C21H23NO4
![1-[(Benzyloxy)carbonyl]-4-(2,4-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2171809-44-0](/s/WSQXQJRAKTYCIW-UHFFFAOYSA-N.svg)
1-[(Benzyloxy)carbonyl]-4-(2,4-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2171809-44-0C21H23NO4
![1-[(Benzyloxy)carbonyl]-4-(2,3-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2171844-08-7](/s/MSFQTZXQUDGTPW-UHFFFAOYSA-N.svg)
1-[(Benzyloxy)carbonyl]-4-(2,3-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2171844-08-7C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(3,5-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227752-60-3](/s/XARUMBIPGGNNRO-RBUKOAKNSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(3,5-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227752-60-3C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,6-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227650-61-3](/s/AVPLYORFVFPWII-QZTJIDSGSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,6-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227650-61-3C21H23NO4
![3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoic acid chemical structure, C21H23NO4, CAS 2172250-61-0](/s/OQHGUXVPBHGDKD-UHFFFAOYSA-N.svg)
3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoic acid
CAS 2172250-61-0C21H23NO4
![2-Ethyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid chemical structure, C21H23NO4, CAS 2172570-81-7](/s/ALBLODXMGPVTEV-UHFFFAOYSA-N.svg)
2-Ethyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid
CAS 2172570-81-7C21H23NO4
1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3,5-dimethyladamantane-1-carboxylate
CAS 2237960-07-3C21H23NO4
![(3R)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoic acid chemical structure, C21H23NO4, CAS 2137142-04-0](/s/OQHGUXVPBHGDKD-OAQYLSRUSA-N.svg)
(3R)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoic acid
CAS 2137142-04-0C21H23NO4
![rac-(2R,4S)-4-Benzyl-1-[(benzyloxy)carbonyl]piperidine-2-carboxylic acid chemical structure, C21H23NO4, CAS 2803418-64-4](/s/KLDWOXPKWFGQKT-OALUTQOASA-N.svg)
rac-(2R,4S)-4-Benzyl-1-[(benzyloxy)carbonyl]piperidine-2-carboxylic acid
CAS 2803418-64-4C21H23NO4
![rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(4-ethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2227753-21-9](/s/BQUVCDHHVLJHTC-RBUKOAKNSA-N.svg)
rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(4-ethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2227753-21-9C21H23NO4
![1-[(Benzyloxy)carbonyl]-4-(2-ethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2171831-47-1](/s/MEMMEPXPQUPGSO-UHFFFAOYSA-N.svg)
1-[(Benzyloxy)carbonyl]-4-(2-ethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2171831-47-1C21H23NO4
![1-[(Benzyloxy)carbonyl]-4-(2,6-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2171831-59-5](/s/AVPLYORFVFPWII-UHFFFAOYSA-N.svg)
1-[(Benzyloxy)carbonyl]-4-(2,6-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2171831-59-5C21H23NO4
![1-[(Benzyloxy)carbonyl]-4-(4-ethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2171975-62-3](/s/BQUVCDHHVLJHTC-UHFFFAOYSA-N.svg)
1-[(Benzyloxy)carbonyl]-4-(4-ethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2171975-62-3C21H23NO4
![1-[(Benzyloxy)carbonyl]-4-(2,5-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2172009-12-8](/s/NDDFGJVAQNIPJM-UHFFFAOYSA-N.svg)
1-[(Benzyloxy)carbonyl]-4-(2,5-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2172009-12-8C21H23NO4
![1-[(Benzyloxy)carbonyl]-4-(3,4-dimethylphenyl)pyrrolidine-3-carboxylic acid chemical structure, C21H23NO4, CAS 2172195-07-0](/s/OZXVDEDMZDKTAP-UHFFFAOYSA-N.svg)
1-[(Benzyloxy)carbonyl]-4-(3,4-dimethylphenyl)pyrrolidine-3-carboxylic acid
CAS 2172195-07-0C21H23NO4
![1-(4-{[(Benzyloxy)carbonyl]amino}phenyl)cyclohexane-1-carboxylic acid chemical structure, C21H23NO4, CAS 2352657-50-0](/s/DVINAEBZMOAPTA-UHFFFAOYSA-N.svg)
1-(4-{[(Benzyloxy)carbonyl]amino}phenyl)cyclohexane-1-carboxylic acid
CAS 2352657-50-0C21H23NO4
![2-({1-[(Benzyloxy)carbonyl]piperidin-4-yl}methyl)benzoic acid chemical structure, C21H23NO4, CAS 2580234-46-2](/s/GYVGQXZFVVUQSP-UHFFFAOYSA-N.svg)
2-({1-[(Benzyloxy)carbonyl]piperidin-4-yl}methyl)benzoic acid
CAS 2580234-46-2C21H23NO4
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylbutanoic acid2303331-16-8C21H23NO4
- (3R)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylbutanoic acid2580113-86-4C21H23NO4
- (3S)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylbutanoic acid2580103-87-1C21H23NO4
- 4-{[(Benzyloxy)carbonyl]amino}-3-(4-cyclopropylphenyl)butanoic acid2357896-31-0C21H23NO4
- 1-[(Benzyloxy)carbonyl]-2-methyl-4-(4-methylphenyl)pyrrolidine-2-carboxylic acid2580224-13-9C21H23NO4
- 4-Benzyl-1-[(benzyloxy)carbonyl]piperidine-4-carboxylic acid2359156-57-1C21H23NO4
- (3R)-5-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoic acid2580091-80-9C21H23NO4
- 1-[(Benzyloxy)carbonyl]-5-(3-methylphenyl)piperidine-3-carboxylic acid2639444-73-6C21H23NO4
- 1-[(Benzyloxy)carbonyl]-4-(3-methylphenyl)piperidine-4-carboxylic acid2357974-23-1C21H23NO4
- 1-[(Benzyloxy)carbonyl]-4-(4-methylphenyl)piperidine-4-carboxylic acid2360004-99-3C21H23NO4
- 1-[(Benzyloxy)carbonyl]-5-(4-methylphenyl)piperidine-3-carboxylic acid2639445-29-5C21H23NO4
- 4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}(methyl)amino)pentanoic acid2680690-33-7C21H23NO4
- Benzyl 6-hydroxy-3,4-dihydrospiro[2-benzopyran-1,4'-piperidine]-1'-carboxylate2680810-77-7C21H23NO4
- Methyl (2S)-2-{[(benzyloxy)carbonyl]amino}-3-[3-(prop-2-en-1-yl)phenyl]propanoate2679943-45-2C21H23NO4
- Benzyl 3-(3-methoxybenzoyl)piperidine-1-carboxylate2680828-60-6C21H23NO4
- 2-{[(Benzyloxy)carbonyl](cyclohexyl)amino}benzoic acid2680779-52-4C21H23NO4
- Methyl (2R)-2-{[(benzyloxy)carbonyl]amino}-3-[3-(prop-2-en-1-yl)phenyl]propanoate2679936-45-7C21H23NO4
- 1-{[(Benzyloxy)carbonyl]amino}-3-(propan-2-yl)-2,3-dihydro-1H-indene-1-carboxylic acid2680684-39-1C21H23NO4
- (9H-Fluoren-9-yl)methyl (2S,4R)-4-hydroxy-2-(methoxymethyl)pyrrolidine-1-carboxylate2763887-58-5C21H23NO4
- (9H-Fluoren-9-yl)methyl (2R,4R)-4-hydroxy-2-(methoxymethyl)pyrrolidine-1-carboxylate2763886-14-0C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[3-(hydroxymethyl)oxan-3-yl]carbamate2763909-10-8C21H23NO4
- (9H-Fluoren-9-yl)methyl N-{[3-(hydroxymethyl)oxetan-3-yl]methyl}-N-methylcarbamate2763939-16-6C21H23NO4
- (9H-Fluoren-9-yl)methyl (3R,5S)-3-hydroxy-5-methoxypiperidine-1-carboxylate2763888-87-3C21H23NO4
- (9H-Fluoren-9-yl)methyl (3S,5R)-3-hydroxy-5-methoxypiperidine-1-carboxylate2763891-07-0C21H23NO4
- (9H-Fluoren-9-yl)methyl 6-hydroxy-6-methyl-1,4-oxazepane-4-carboxylate2764016-85-3C21H23NO4
- (9H-Fluoren-9-yl)methyl 4-hydroxy-2-(methoxymethyl)pyrrolidine-1-carboxylate2763902-77-6C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl (2R,4R)-4-hydroxy-2-(methoxymethyl)pyrrolidine-1-carboxylate2763947-09-5C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-ethyl-N-[(3R,4S)-4-hydroxyoxolan-3-yl]carbamate2763947-25-5C21H23NO4
- (9H-Fluoren-9-yl)methyl 2-[(1R)-1-hydroxyethyl]morpholine-4-carboxylate2763899-02-9C21H23NO4
- (9H-Fluoren-9-yl)methyl 2-[(1S)-1-hydroxyethyl]morpholine-4-carboxylate2763899-04-1C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[1-(1-hydroxy-2-methoxyethyl)cyclopropyl]carbamate2763902-47-0C21H23NO4
- (9H-Fluoren-9-yl)methyl N-{[2-(hydroxymethyl)oxolan-2-yl]methyl}carbamate2764013-57-0C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-(2-hydroxyethyl)morpholine-4-carboxylate2273166-19-9C21H23NO4
- (9H-Fluoren-9-yl)methyl N-(3-hydroxypropyl)-N-(oxetan-3-yl)carbamate2763976-04-9C21H23NO4
- (9H-Fluoren-9-yl)methyl (3R,5R)-3-hydroxy-5-methoxypiperidine-1-carboxylate2763890-38-4C21H23NO4
- (9H-Fluoren-9-yl)methyl (2S,4R)-2-(hydroxymethyl)-4-methoxypyrrolidine-1-carboxylate2763885-36-3C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-[(3R,4S)-3-(hydroxymethyl)oxan-4-yl]carbamate2764020-74-6C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-ethoxy-3-(hydroxymethyl)azetidine-1-carboxylate2763922-94-5C21H23NO4
- (9H-Fluoren-9-yl)methyl 2-(1-hydroxyethyl)morpholine-4-carboxylate2764007-14-7C21H23NO4
- (9H-Fluoren-9-yl)methyl (2S,4S)-2-(hydroxymethyl)-4-methoxypyrrolidine-1-carboxylate2763890-72-6C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-(2-hydroxyethoxy)pyrrolidine-1-carboxylate2763965-04-2C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-{[(2R,5S)-5-(hydroxymethyl)oxolan-2-yl]methyl}carbamate779358-53-1C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[2-hydroxy-1-(oxolan-3-yl)ethyl]carbamate2763927-60-0C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-(1-hydroxyethyl)morpholine-4-carboxylate2764012-80-6C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-{2-[(3R,4S)-4-hydroxyoxolan-3-yl]ethyl}carbamate2763921-53-3C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[(1s,3s)-1-(hydroxymethyl)-3-methoxycyclobutyl]carbamate2763885-53-4C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-(2-hydroxypropoxy)azetidine-1-carboxylate2763922-86-5C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-(hydroxymethyl)-3-methylmorpholine-4-carboxylate2763924-83-8C21H23NO4
- (9H-Fluoren-9-yl)methyl (3S,5S)-3-hydroxy-5-methoxypiperidine-1-carboxylate2763885-85-2C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[3-(2-hydroxyethyl)oxolan-3-yl]carbamate2764007-68-1C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-[(3R,4S)-4-hydroxy-5,5-dimethyloxolan-3-yl]carbamate2764018-39-3C21H23NO4
- (9H-Fluoren-9-yl)methyl 5-(hydroxymethyl)-1,4-oxazepane-4-carboxylate2763915-90-6C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-{[(2R,4S)-4-hydroxyoxan-2-yl]methyl}carbamate2764006-99-5C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[2-(3-hydroxyoxolan-3-yl)ethyl]carbamate1997210-27-1C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-[(2R,4R)-2-(hydroxymethyl)oxan-4-yl]carbamate2764010-61-7C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-(hydroxymethyl)-3-methoxypyrrolidine-1-carboxylate2003930-65-0C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-hydroxy-3-(methoxymethyl)pyrrolidine-1-carboxylate2763925-88-6C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[(3-hydroxyoxolan-3-yl)methyl]-N-methylcarbamate2764001-48-9C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[2-hydroxy-2-(oxolan-2-yl)ethyl]carbamate2763902-73-2C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[2-hydroxy-1-(oxolan-2-yl)ethyl]carbamate2763902-95-8C21H23NO4
- (9H-Fluoren-9-yl)methyl 3-hydroxy-5-methoxypiperidine-1-carboxylate2763907-16-8C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[(3-hydroxyoxan-3-yl)methyl]carbamate2763906-08-5C21H23NO4
- (9H-Fluoren-9-yl)methyl 2-(2-hydroxyethyl)morpholine-4-carboxylate2764002-69-7C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[2-hydroxy-2-(oxolan-3-yl)ethyl]carbamate2763930-60-3C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[3-(hydroxymethyl)oxolan-3-yl]-N-methylcarbamate2763930-65-8C21H23NO4
- rac-(9H-Fluoren-9-yl)methyl N-[(1R,3S,4R)-3-hydroxy-4-methoxycyclopentyl]carbamate2764020-47-3C21H23NO4
- (9H-Fluoren-9-yl)methyl 6-(hydroxymethyl)-1,4-oxazepane-4-carboxylate2764015-79-2C21H23NO4
- (9H-Fluoren-9-yl)methyl N-{[4-(hydroxymethyl)oxolan-2-yl]methyl}carbamate2764009-70-1C21H23NO4
- (9H-Fluoren-9-yl)methyl N-{[3-(hydroxymethyl)oxolan-3-yl]methyl}carbamate2764010-11-7C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[(1s,3R,5S)-3,5-dihydroxycyclohexyl]carbamate2770452-88-3C21H23NO4
- (9H-Fluoren-9-yl)methyl N-[2-(3-hydroxyoxetan-3-yl)propan-2-yl]carbamate2770518-32-4C21H23NO4
- (9H-Fluoren-9-yl)methyl (2S,6R)-2-(hydroxymethyl)-6-methylmorpholine-4-carboxylate2763885-17-0C21H23NO4
- Naloxone impurity 82481083-84-3C21H23NO4
- 3-(Fmoc-amino)-2-ethylbutanoic Acid2354192-68-8C21H23NO4
- 5-Acetyl-10-ethoxy-11-methoxyspiro[5-azatricyclo[6.3.1.04,12]dodeca-1(12),8,10-triene-2,4'-cyclohexa-2,5-diene]-1'-one10214-74-1C21H23NO4
- 1H-Indole-1-carboxylic acid,7-benzoyl-2,3-dihydro-5-methoxy-,1,1-dimethylethyl ester321527-77-9C21H23NO4
Frequently asked questions
What is the molar mass of C21H23NO4?
The molar mass of C21H23NO4 is 353.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 23 hydrogen atoms, 1 nitrogen atom and 4 oxygen atoms. The monoisotopic mass is 363.2255 Da.
How many compounds have the formula C21H23NO4?
CompoundList lists 409 compounds with the molecular formula C21H23NO4, including 3-{[(Benzyloxy)carbonyl]amino}-1-(3,5-dimethylphenyl)cyclobutane-1-carboxylic acid, rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,4-dimethylphenyl)pyrrolidine-3-carboxylic acid, rac-(3R,4S)-1-[(Benzyloxy)carbonyl]-4-(2,3-dimethylphenyl)pyrrolidine-3-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 C21H23NO4?
C21H23NO4 has a degree of unsaturation of 11. 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.