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Molecular formula

C21H16ClNO2

23 compounds have this formula on CompoundList.

Molar mass
349.81g/mol
Monoisotopic mass
349.0870Da
Atoms
41
Elements
5
Rings plus double bonds
14

The formula C21H16ClNO2 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms, 1 chlorine atom, 1 nitrogen atom 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 × 2172.10%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 164.61%
    1.008 × 16 = 16.128 g/mol
  • Cl Chlorine × 110.13%
    35.45 × 1 = 35.450 g/mol
  • N Nitrogen × 14.00%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 29.15%
    15.999 × 2 = 31.998 g/mol
Look up another formula

Compounds with the formula C21H16ClNO2

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 23 of 23 compounds

N-(2-Benzoyl-4-chlorophenyl)-3-methylbenzamide chemical structure, C21H16ClNO2, CAS 84609-07-4
N-(2-Benzoyl-4-chlorophenyl)-3-methylbenzamide
CAS 84609-07-4C21H16ClNO2
N-(2-Benzoyl-4-chlorophenyl)-2-methylbenzamide chemical structure, C21H16ClNO2, CAS 84609-09-6
N-(2-Benzoyl-4-chlorophenyl)-2-methylbenzamide
CAS 84609-09-6C21H16ClNO2
N-(2-Benzoyl-4-chlorophenyl)-4-methylbenzamide chemical structure, C21H16ClNO2, CAS 289059-84-3
N-(2-Benzoyl-4-chlorophenyl)-4-methylbenzamide
CAS 289059-84-3C21H16ClNO2
N-(3-Benzoylphenyl)-2-(4-chlorophenyl)acetamide chemical structure, C21H16ClNO2, CAS 690678-44-5
N-(3-Benzoylphenyl)-2-(4-chlorophenyl)acetamide
CAS 690678-44-5C21H16ClNO2
2-(4-Benzoylphenyl)-2-(4-chlorophenyl)acetamide chemical structure, C21H16ClNO2, CAS 338965-26-7
2-(4-Benzoylphenyl)-2-(4-chlorophenyl)acetamide
CAS 338965-26-7C21H16ClNO2
N-(3-Chloro-2-methylphenyl)-9H-xanthene-9-carboxamide chemical structure, C21H16ClNO2, CAS 349401-08-7
N-(3-Chloro-2-methylphenyl)-9H-xanthene-9-carboxamide
CAS 349401-08-7C21H16ClNO2
N-(2-Benzoyl-4-chlorophenyl)-2-phenylacetamide chemical structure, C21H16ClNO2, CAS 76303-78-1
N-(2-Benzoyl-4-chlorophenyl)-2-phenylacetamide
CAS 76303-78-1C21H16ClNO2
N-(5-Chloro-2-methylphenyl)-9H-xanthene-9-carboxamide chemical structure, C21H16ClNO2, CAS 349133-45-5
N-(5-Chloro-2-methylphenyl)-9H-xanthene-9-carboxamide
CAS 349133-45-5C21H16ClNO2
3-(4-Chlorophenyl)-N-(2-phenoxyphenyl)acrylamide chemical structure, C21H16ClNO2, CAS 547704-77-8
3-(4-Chlorophenyl)-N-(2-phenoxyphenyl)acrylamide
CAS 547704-77-8C21H16ClNO2
(4Z)-4-[(2-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid chemical structure, C21H16ClNO2, CAS 379729-48-3
(4Z)-4-[(2-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid
CAS 379729-48-3C21H16ClNO2
4-[(4-Chlorophenyl)methylidene]-1,2,3,4-tetrahydroacridine-9-carboxylic acid chemical structure, C21H16ClNO2, CAS 379728-21-9
4-[(4-Chlorophenyl)methylidene]-1,2,3,4-tetrahydroacridine-9-carboxylic acid
CAS 379728-21-9C21H16ClNO2
N-(5-Chloro-2-methylphenyl)-2-{naphtho[2,1-B]furan-1-YL}acetamide chemical structure, C21H16ClNO2, CAS 622351-54-6
N-(5-Chloro-2-methylphenyl)-2-{naphtho[2,1-B]furan-1-YL}acetamide
CAS 622351-54-6C21H16ClNO2
{5-Chloro-2-[(4-methoxybenzylidene)amino]phenyl}(phenyl)methanone chemical structure, C21H16ClNO2, CAS 352548-02-8
{5-Chloro-2-[(4-methoxybenzylidene)amino]phenyl}(phenyl)methanone
CAS 352548-02-8C21H16ClNO2
(4E)-4-[(2-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid chemical structure, C21H16ClNO2
(4E)-4-[(2-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid
C21H16ClNO2
N-(2-Benzoyl-4-methylphenyl)-4-chlorobenzamide chemical structure, C21H16ClNO2, CAS 325987-99-3
N-(2-Benzoyl-4-methylphenyl)-4-chlorobenzamide
CAS 325987-99-3C21H16ClNO2
2-Azetidinone, 4-(4-chlorophenyl)-3-phenoxy-1-phenyl- chemical structure, C21H16ClNO2, CAS 827028-26-2
2-Azetidinone, 4-(4-chlorophenyl)-3-phenoxy-1-phenyl-
CAS 827028-26-2C21H16ClNO2
2-(2-(2-Hydroxynaphthalen-1-yl)vinyl)quinolin-8-ol hydrochloride chemical structure, C21H16ClNO2, CAS 189506-01-2
2-(2-(2-Hydroxynaphthalen-1-yl)vinyl)quinolin-8-ol hydrochloride
CAS 189506-01-2C21H16ClNO2
4-[(2-Chlorophenyl)methylidene]-1,2,3,4-tetrahydroacridine-9-carboxylic acid chemical structure, C21H16ClNO2
4-[(2-Chlorophenyl)methylidene]-1,2,3,4-tetrahydroacridine-9-carboxylic acid
C21H16ClNO2
(4E)-4-[(4-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid chemical structure, C21H16ClNO2
(4E)-4-[(4-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid
C21H16ClNO2
N-Benzyl-2-(4-chlorobenzoyl)benzamide chemical structure, C21H16ClNO2, CAS 923555-83-3
N-Benzyl-2-(4-chlorobenzoyl)benzamide
CAS 923555-83-3C21H16ClNO2
5-Chloro-2-[3-(4-phenoxyphenoxy)but-1-yn-1-yl]pyridine chemical structure, C21H16ClNO2, CAS 89878-58-0
5-Chloro-2-[3-(4-phenoxyphenoxy)but-1-yn-1-yl]pyridine
CAS 89878-58-0C21H16ClNO2
6-[1-Anilino-3-(5-chloro-2-hydroxyphenyl)prop-2-en-1-ylidene]cyclohexa-2,4-dien-1-one chemical structure, C21H16ClNO2, CAS 192438-48-5
6-[1-Anilino-3-(5-chloro-2-hydroxyphenyl)prop-2-en-1-ylidene]cyclohexa-2,4-dien-1-one
CAS 192438-48-5C21H16ClNO2
4-[(4-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid chemical structure, C21H16ClNO2
4-[(4-Chlorophenyl)methylidene]-2,3-dihydro-1H-acridine-9-carboxylic acid
C21H16ClNO2

Frequently asked questions

What is the molar mass of C21H16ClNO2?

The molar mass of C21H16ClNO2 is 349.81 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms, 1 chlorine atom, 1 nitrogen atom and 2 oxygen atoms. The monoisotopic mass is 349.0870 Da.

How many compounds have the formula C21H16ClNO2?

CompoundList lists 23 compounds with the molecular formula C21H16ClNO2, including N-(2-Benzoyl-4-chlorophenyl)-3-methylbenzamide, N-(2-Benzoyl-4-chlorophenyl)-2-methylbenzamide, N-(2-Benzoyl-4-chlorophenyl)-4-methylbenzamide. 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 C21H16ClNO2?

C21H16ClNO2 has a degree of unsaturation of 14. 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.