Molecular formula
C21H16ClN3O2
63 compounds have this formula on CompoundList.
- Molar mass
- 377.83g/mol
- Monoisotopic mass
- 377.0931Da
- Atoms
- 43
- Elements
- 5
- Rings plus double bonds
- 15
The formula C21H16ClN3O2 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms and 2 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 × 2166.76%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 164.27%1.008 × 16 = 16.128 g/mol
- Cl Chlorine × 19.38%35.45 × 1 = 35.450 g/mol
- N Nitrogen × 311.12%14.007 × 3 = 42.021 g/mol
- O Oxygen × 28.47%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C21H16ClN3O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 63 of 63 compounds
![2-(4-Chlorophenyl)-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]acetamide chemical structure, C21H16ClN3O2, CAS 347340-11-8](/s/NATSALATMWNWDZ-UHFFFAOYSA-N.svg)
2-(4-Chlorophenyl)-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]acetamide
CAS 347340-11-8C21H16ClN3O2
Adaptaquin
CAS 385786-48-1C21H16ClN3O2
![3-(4-Chlorophenyl)-8-(2-furyl)-2-methyl-8,9-dihydropyrazolo[1,5-a]quinazolin-6(7H)-one chemical structure, C21H16ClN3O2, CAS 774561-30-7](/s/ZSIJRWQPTAZBHQ-UHFFFAOYSA-N.svg)
3-(4-Chlorophenyl)-8-(2-furyl)-2-methyl-8,9-dihydropyrazolo[1,5-a]quinazolin-6(7H)-one
CAS 774561-30-7C21H16ClN3O2
![1-(4-Chlorophenyl)-3-ethyl-4-oxo-7-phenyl-4H-pyrimido[1,2-b]pyridazin-1-ium-2-olate chemical structure, C21H16ClN3O2, CAS 485319-21-9](/s/CLSFHZOPSXDAQL-UHFFFAOYSA-N.svg)
1-(4-Chlorophenyl)-3-ethyl-4-oxo-7-phenyl-4H-pyrimido[1,2-b]pyridazin-1-ium-2-olate
CAS 485319-21-9C21H16ClN3O2
![N-[4-(1H-Benzimidazol-2-yl)phenyl]-5-chloro-2-methoxybenzamide chemical structure, C21H16ClN3O2, CAS 333779-11-6](/s/XVHLAOXDEIGMFA-UHFFFAOYSA-N.svg)
N-[4-(1H-Benzimidazol-2-yl)phenyl]-5-chloro-2-methoxybenzamide
CAS 333779-11-6C21H16ClN3O2
N-(5-Chloro-2-cyanophenyl)-1-(2-methylbenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide
CAS 946246-82-8C21H16ClN3O2
![N-[7-(2-Chlorophenyl)-5-oxo-7,8-dihydro-6H-quinazolin-2-yl]benzamide chemical structure, C21H16ClN3O2, CAS 351164-04-0](/s/XVXNNCXKMQIBSV-UHFFFAOYSA-N.svg)
N-[7-(2-Chlorophenyl)-5-oxo-7,8-dihydro-6H-quinazolin-2-yl]benzamide
CAS 351164-04-0C21H16ClN3O2
![N-[7-(3-Chlorophenyl)-5-oxo-7,8-dihydro-6H-quinazolin-2-yl]benzamide chemical structure, C21H16ClN3O2, CAS 374769-63-8](/s/NLKKGPUTPMLPHI-UHFFFAOYSA-N.svg)
N-[7-(3-Chlorophenyl)-5-oxo-7,8-dihydro-6H-quinazolin-2-yl]benzamide
CAS 374769-63-8C21H16ClN3O2
![2-Chloro-N-[2-(3,4-dimethylphenyl)-1,3-benzoxazol-5-yl]pyridine-3-carboxamide chemical structure, C21H16ClN3O2, CAS 530148-19-7](/s/JUGYJTAIHNSFOY-UHFFFAOYSA-N.svg)
2-Chloro-N-[2-(3,4-dimethylphenyl)-1,3-benzoxazol-5-yl]pyridine-3-carboxamide
CAS 530148-19-7C21H16ClN3O2
![2-(4-Chlorophenyl)-N-[2-methyl-3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]acetamide chemical structure, C21H16ClN3O2, CAS 347338-24-3](/s/DWRCBQPADZMDFI-UHFFFAOYSA-N.svg)
2-(4-Chlorophenyl)-N-[2-methyl-3-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]acetamide
CAS 347338-24-3C21H16ClN3O2
![N-(2-Azepan-1-ylethyl)-3-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]pyridin-2-amine chemical structure, C21H16ClN3O2, CAS 1251607-33-6](/s/XIVWIUPVKLNMOA-UHFFFAOYSA-N.svg)
N-(2-Azepan-1-ylethyl)-3-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]pyridin-2-amine
CAS 1251607-33-6C21H16ClN3O2
4-(4-Chlorophenyl)-2-(4-nitrophenyl)-2,3-dihydro-1H-1,5-benzodiazepine
CAS 5986-31-2C21H16ClN3O2
1-(4-Chlorobenzyl)-5-(3-(p-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one
CAS 1251606-94-6C21H16ClN3O2
![N-[3-(1H-Benzimidazol-2-yl)-4-chlorophenyl]-4-methoxybenzamide chemical structure, C21H16ClN3O2, CAS 5836-57-7](/s/ROSMFNBDJFKURP-UHFFFAOYSA-N.svg)
N-[3-(1H-Benzimidazol-2-yl)-4-chlorophenyl]-4-methoxybenzamide
CAS 5836-57-7C21H16ClN3O2
LasR-IN-2
CAS 3033530-61-6C21H16ClN3O2
![N-[4-(1H-Benzimidazol-2-yl)phenyl]-2-(4-chlorophenoxy)acetamide chemical structure, C21H16ClN3O2, CAS 394229-53-9](/s/FHHXHTCTNDKNMK-UHFFFAOYSA-N.svg)
N-[4-(1H-Benzimidazol-2-yl)phenyl]-2-(4-chlorophenoxy)acetamide
CAS 394229-53-9C21H16ClN3O2
![1-(3-Chlorobenzyl)-3-methyl-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid chemical structure, C21H16ClN3O2, CAS 1011398-52-9](/s/IOBUWRSNUGMYLR-UHFFFAOYSA-N.svg)
1-(3-Chlorobenzyl)-3-methyl-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid
CAS 1011398-52-9C21H16ClN3O2
![1-(2-Chlorobenzyl)-3-methyl-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid chemical structure, C21H16ClN3O2, CAS 1011399-97-5](/s/SELAFZSNYCXVOM-UHFFFAOYSA-N.svg)
1-(2-Chlorobenzyl)-3-methyl-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid
CAS 1011399-97-5C21H16ClN3O2
![1-(4-Chlorobenzyl)-3-methyl-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid chemical structure, C21H16ClN3O2, CAS 1011400-09-1](/s/IBAJNSURVSGOMV-UHFFFAOYSA-N.svg)
1-(4-Chlorobenzyl)-3-methyl-6-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid
CAS 1011400-09-1C21H16ClN3O2
![2-[12-Chloro-7-(pyridin-3-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),4,10,12-tetraen-4-yl]phenol chemical structure, C21H16ClN3O2, CAS 896618-91-0](/s/MSENSSDQASDNBY-UHFFFAOYSA-N.svg)
2-[12-Chloro-7-(pyridin-3-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),4,10,12-tetraen-4-yl]phenol
CAS 896618-91-0C21H16ClN3O2
![N-(2-Chloro-5-[1,3]oxazolo[4,5-b]pyridin-2-ylphenyl)-2,4-dimethylbenzamide chemical structure, C21H16ClN3O2, CAS 674359-52-5](/s/IWEWKDNCCWKBCY-UHFFFAOYSA-N.svg)
N-(2-Chloro-5-[1,3]oxazolo[4,5-b]pyridin-2-ylphenyl)-2,4-dimethylbenzamide
CAS 674359-52-5C21H16ClN3O2
![3-Chloro-4-methyl-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]benzamide chemical structure, C21H16ClN3O2, CAS 442524-21-2](/s/YKCLUAUBOKVUSG-UHFFFAOYSA-N.svg)
3-Chloro-4-methyl-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]benzamide
CAS 442524-21-2C21H16ClN3O2
![(2-Chlorophenyl)-[3-(2-hydroxyphenyl)-5-pyridin-3-yl-3,4-dihydropyrazol-2-yl]methanone chemical structure, C21H16ClN3O2, CAS 868214-16-8](/s/GSVQHLGWAVODTC-UHFFFAOYSA-N.svg)
(2-Chlorophenyl)-[3-(2-hydroxyphenyl)-5-pyridin-3-yl-3,4-dihydropyrazol-2-yl]methanone
CAS 868214-16-8C21H16ClN3O2
3-(4-Chlorophenyl)-5-(4-nitrophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole
CAS 109333-39-3C21H16ClN3O2
- 4H-Pyrido(2,1-a)phthalazine-1-carboxamide, 10-chloro-N,N-dimethyl-4-oxo-3-phenyl-110924-84-0C21H16ClN3O2
- 2-[12-Chloro-7-(pyridin-4-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),4,10,12-tetraen-4-yl]phenol896618-90-9C21H16ClN3O2
- 4-Chloro-2-[7-(pyridin-4-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),4,10,12-tetraen-4-yl]phenol896619-04-8C21H16ClN3O2
- 4-Chloro-2-(5-pyridin-3-yl-1,10b-dihydropyrazolo[1,5-c][1,3]benzoxazin-2-yl)phenol896619-05-9C21H16ClN3O2
- N-[(E)-[(E)-3-(4-Chlorophenyl)-1-(4-nitrophenyl)prop-2-enylidene]amino]aniline338777-21-2C21H16ClN3O2
- N-(5-Chloro-2-cyanophenyl)-1-[(4-methylphenyl)methyl]-2-oxopyridine-3-carboxamide946331-09-5C21H16ClN3O2
- 2-(4-Chlorophenyl)-N-(4-[1,3]oxazolo[4,5-b]pyridin-2-ylbenzyl)acetamide892674-21-4C21H16ClN3O2
- N-[3-(1H-Benzimidazol-2-yl)phenyl]-2-(2-chlorophenoxy)acetamide364625-46-7C21H16ClN3O2
- 2-Chloro-N-[2-(4-methoxyphenyl)-2,3-dihydro-1H-isoindol-1-ylidene]pyridine-3-carboxamide729581-86-6C21H16ClN3O2
- 3-(4-Chlorophenyl)-1-(3-nitrophenyl)-5-phenyl-4,5-dihydro-1H-pyrazole343374-72-1C21H16ClN3O2
- 4-Chloro-N-(5-oxo-7-phenyl-5,6,7,8-tetrahydroquinazolin-2-yl)benzamide775293-20-4C21H16ClN3O2
- 3-Chloro-N-(5-oxo-7-phenyl-5,6,7,8-tetrahydroquinazolin-2-yl)benzamide777872-24-9C21H16ClN3O2
- 3-(4-Chlorophenyl)-5,7-di(2-furyl)-2-methyl-6,7-dihydropyrazolo[1,5-a]pyrimidine879472-85-2C21H16ClN3O2
- 3-(9-Chloro-5-(pyridin-4-yl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol899973-56-9C21H16ClN3O2
- 3-(9-Chloro-5-(pyridin-3-yl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol941946-82-3C21H16ClN3O2
- N-[3-Chloro-4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]-4-ethylbenzamide929825-22-9C21H16ClN3O2
- Methyl (2Z)-3-[1-(3-chlorobenzyl)-3-phenyl-1H-pyrazol-4-yl]-2-cyanoprop-2-enoate1005884-86-5C21H16ClN3O2
- 4-Chloro-N-[1-(4-methoxyphenyl)benzimidazol-5-yl]benzamide487032-90-6C21H16ClN3O2
- 4-Chloro-N-[1-(2-methoxyphenyl)benzimidazol-5-yl]benzamide500147-18-2C21H16ClN3O2
- 2-Chloro-4-methyl-N-[2-methyl-4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]benzamide898654-98-3C21H16ClN3O2
- N-(5-Chloro-2-cyanophenyl)-1-(3-methylbenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide899991-38-9C21H16ClN3O2
- 1-Benzyl-3-(4-chlorobenzyl)pyrido[3,2-d]pyrimidine-2,4(1H,3H)-dione923132-50-7C21H16ClN3O2
- 3-Benzyl-1-[(2-chlorophenyl)methyl]-1H,2H,3H,4H-pyrido[2,3-d]pyrimidine-2,4-dione902959-64-2C21H16ClN3O2
- 4-[6-(2-Chloro-phenyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-3-methyl-benzoic acid methyl ester1443750-33-1C21H16ClN3O2
- 1-Chloro-N-[(furan-2-yl)methyl]-N-[(pyridin-3-yl)methyl]isoquinoline-3-carboxamide1423792-52-2C21H16ClN3O2
- 2-(2-Chlorophenyl)-N-(5-methyl-2-phenyloxazolo[5,4-b]pyridin-6-yl)acetamide2034521-09-8C21H16ClN3O2
- 2-(2-Chlorophenoxy)-N-(2-(imidazo[1,2-a]pyridin-2-yl)phenyl)acetamide2034474-48-9C21H16ClN3O2
- 2-(9-Chloro-5-(pyridin-2-yl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol899973-38-7C21H16ClN3O2
- 4-Chloro-2-(5-(pyridin-2-yl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol899984-69-1C21H16ClN3O2
- 4-(9-Chloro-5-(pyridin-4-yl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol899973-62-7C21H16ClN3O2
- 4-(9-Chloro-5-(pyridin-3-yl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol899984-87-3C21H16ClN3O2
- 4-(9-Chloro-5-(pyridin-2-yl)-5,10b-dihydro-1H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol899973-65-0C21H16ClN3O2
- N-[[3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl]methyl]-2-naphthalen-1-ylacetamide915929-34-9C21H16ClN3O2
- 2-(4-Chlorophenyl)-N-[2-methyl-4-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]acetamide892672-75-2C21H16ClN3O2
- 3-Benzyl-1-[(4-chlorophenyl)methyl]-1H,2H,3H,4H-pyrido[2,3-d]pyrimidine-2,4-dione902959-70-0C21H16ClN3O2
- 9H-Fluoren-9-ylmethyl 4-chloro-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxylate916420-35-4C21H16ClN3O2
- 3-(4-Chlorophenyl)-1-(4-nitrophenyl)-5-phenyl-4,5-dihydro-1H-pyrazole63367-47-5C21H16ClN3O2
- Benzyl N-(5-chloro-2-cyanophenyl)-N-[(pyridin-2-yl)methyl]carbamate2680850-49-9C21H16ClN3O2
- Benzyl N-[(2-chlorophenyl)methyl]-N-(3-cyanopyridin-2-yl)carbamate2680844-63-5C21H16ClN3O2
Frequently asked questions
What is the molar mass of C21H16ClN3O2?
The molar mass of C21H16ClN3O2 is 377.83 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 377.0931 Da.
How many compounds have the formula C21H16ClN3O2?
CompoundList lists 63 compounds with the molecular formula C21H16ClN3O2, including 2-(4-Chlorophenyl)-N-[2-methyl-5-([1,3]oxazolo[4,5-b]pyridin-2-yl)phenyl]acetamide, Adaptaquin, 3-(4-Chlorophenyl)-8-(2-furyl)-2-methyl-8,9-dihydropyrazolo[1,5-a]quinazolin-6(7H)-one. 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 C21H16ClN3O2?
C21H16ClN3O2 has a degree of unsaturation of 15. 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.