Molecular formula
C21H16O2
76 compounds have this formula on CompoundList.
- Molar mass
- 300.36g/mol
- Monoisotopic mass
- 301.1184Da
- Atoms
- 39
- Elements
- 3
- Rings plus double bonds
- 14
The formula C21H16O2 describes a molecule made of 21 carbon atoms, 16 hydrogen 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 × 2183.98%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 165.37%1.008 × 16 = 16.128 g/mol
- O Oxygen × 210.65%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C21H16O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 76 of 76 compounds
1,1'-Methylenebis(2-naphthalenol)
CAS 1096-84-0C21H16O2
(R)-(+)-2'-Methoxy-(1,1'-binaphthalen)-2-ol
CAS 35193-69-2C21H16O2
1-Pyrenylmethyl methacrylate
CAS 86112-79-0C21H16O2
3,4-Dihydro-3,3-diphenyl-1H-2-benzopyran-1-one
CAS 2674-45-5C21H16O2
4-Phenylchalcone oxide
CAS 82389-34-2C21H16O2
(2,3-Diphenyloxiran-2-yl)-phenylmethanone
CAS 6975-08-2C21H16O2
2-(9H-Fluoren-2-ylmethyl)benzoic acid
CAS 72834-21-0C21H16O2
1(3H)-Isobenzofuranone, 3-phenyl-3-(phenylmethyl)-
CAS 102242-28-4C21H16O2
(Z)-1-(4-Hydroxyphenyl)-2,3-diphenylprop-2-en-1-one
CAS 24845-16-7C21H16O2
7,8-Dihydroxy-7,8-dihydro-8-methylbenzo(a)pyrene
CAS 89524-80-1C21H16O2
5-(Acetoxymethyl)chrysene
CAS 71431-96-4C21H16O2
Benz(a)anthracene-7-methanol, acetate
CAS 17526-24-8C21H16O2
1-(4-Phenoxyphenyl)-3-phenyl-2-propen-1-one
CAS 6317-81-3C21H16O2
1,2-Dihydroxy-3-methylcholanthrene
CAS 64398-48-7C21H16O2
Benz(a)anthracen-7-acetic acid, methyl ester
CAS 63018-40-6C21H16O2
Benzo(a)pyrene-7,8-diol, 7,8-dihydro-7-methyl-, (7S-trans)-
CAS 86594-63-0C21H16O2
4'-Phenylchalcone oxide
CAS 32047-01-1C21H16O2
Benz(j)aceanthrylene-1,2-diol, 1,2-dihydro-3-methyl-, trans-
CAS 132342-17-7C21H16O2
10-Methoxy-10-phenylanthracen-9(10H)-one
CAS 25548-89-4C21H16O2
![Spiro[1H-indene-1,3'(1'H)-naphtho[1,2-c]furan]-1'-one, 2,3-dihydro-4-methyl- chemical structure, C21H16O2, CAS 78606-93-6](/s/HRYZJOKWAXKZTM-UHFFFAOYSA-N.svg)
Spiro[1H-indene-1,3'(1'H)-naphtho[1,2-c]furan]-1'-one, 2,3-dihydro-4-methyl-
CAS 78606-93-6C21H16O2
1,2,3-Triphenylpropane-1,3-dione
CAS 4888-39-5C21H16O2
(9H-Fluoren-3-yl)(4-methoxyphenyl)methanonato
CAS 33207-59-9C21H16O2
![Benz[a]anthracen-12-ol, 7-methyl-, acetate chemical structure, C21H16O2, CAS 17526-28-2](/s/JLXFUZNBHJPWGS-UHFFFAOYSA-N.svg)
Benz[a]anthracen-12-ol, 7-methyl-, acetate
CAS 17526-28-2C21H16O2
2,3,3-Triphenylprop-2-enoic acid
CAS 4452-05-5C21H16O2
- 7-Phenoxy-3-phenyl-1-indanone339116-19-7C21H16O2
- Benz(a)anthracene-12-methanol, acetate17526-33-9C21H16O2
- Phenyl 3,3-diphenylprop-2-enoate5472-00-4C21H16O2
- (7-Methylbenzo[a]anthracen-5-yl) acetate60049-71-0C21H16O2
- 2-Benzofuranmethanol, alpha-(1,1'-biphenyl)-4-yl-82158-27-8C21H16O2
- 2,6-Distyryl-4H-pyran-4-one17173-83-0C21H16O2
- (2E)-1-(Biphenyl-4-yl)-3-(2-hydroxyphenyl)prop-2-en-1-one132971-90-5C21H16O2
- Naphthalene, 2,2'-[methylenebis(oxy)]bis-33257-36-2C21H16O2
- 2,2'-Methylenebis(5-phenylfuran)102732-77-4C21H16O2
- [1,1':4',1''-Terphenyl]-4-yl acrylate162320-01-6C21H16O2
- (Trans)-9,10-dihydro-7-methylbenzo(a)pyrene-9,10-diol79418-89-6C21H16O2
- 5-Methyl-3,3-diphenyl-2-benzofuran-1(3H)-one500698-13-5C21H16O2
- 10-Benzyl-10-hydroxy-9(10H)-phenanthrenone5025-29-6C21H16O2
- 6-Methoxy-2,3-diphenyl-1-benzofuran14770-94-6C21H16O2
- Benzo(a)pyrene-7,8-diol, 7,8-dihydro-7-methyl-, (7R-trans)-83572-63-8C21H16O2
- Benzo(pqr)tetraphene-10-carboxylic acid, 7,8,9,10-tetrahydro-86803-22-7C21H16O2
- Benzo(a)pyrene-4,5-diol, 4,5-dihydro-7-methyl-, cis-83516-23-8C21H16O2
- (12-Methylbenzo[a]anthracen-7-yl) acetate17526-35-1C21H16O2
- 3-(2-Methoxyphenyl)-2-phenyl-1-benzofuran62378-28-3C21H16O2
- cis-3-Methylcholanthrene-1,2-diol3342-99-2C21H16O2
- (4S,5S)-7-Methyl-4,5-dihydrobenzo(a)pyrene-4,5-diol79427-43-3C21H16O2
- 3-(4-Methylphenyl)-3-phenyl-2-benzofuran-1(3H)-one51570-78-6C21H16O2
- (Bicyclo[2.2.1]hepta-2,5-diene-2,3-diyl)bis(phenylmethanone)1096-50-0C21H16O2
- 4-Phenoxychalcone90811-87-3C21H16O2
- Ethyl Chrysene-5-carboxylate191021-93-9C21H16O2
- Indeno[2,1-b]pyran-9-carboxaldehyde, 4-methyl-2-(4-methylphenyl)-62225-26-7C21H16O2
- Toluene, 2,4-dibenzoyl-859794-05-1C21H16O2
- 4-[2-([1,1'-Biphenyl]-2-yl)ethenyl]benzoic acid833485-28-2C21H16O2
- 1-(4-Benzoylphenyl)-2-phenylethan-1-one917567-35-2C21H16O2
- 2-(Propan-2-yl)tetracene-5,12-dione62775-15-9C21H16O2
- 2a,7a-Dihydro-2a,7a-diphenyl-7H-indeno[1,2-c]-1,2-dioxete53067-88-2C21H16O2
- (9-Methoxy-9H-fluoren-9-yl)(phenyl)methanone88073-37-4C21H16O2
- 1-Phenoxy-4-[(3-phenylprop-2-yn-1-yl)oxy]benzene89878-38-6C21H16O2
- 9-(Phenylmethyl)-9H-fluorene-9-carboxylic acid4709-69-7C21H16O2
- 4-Methyl-4-phenylspiro[1,2-dioxetane-3,9'-fluorene]96258-27-4C21H16O2
- 1,3-Dibenzoyl-5-methylbenzene2226849-22-3C21H16O2
- 2'-Methyl-[1,1':4',1''-terphenyl]-4,4''-dicarbaldehyde869959-16-0C21H16O2
- 1-(Benzyloxy)-4-(4-ethynylphenoxy)benzene2808120-43-4C21H16O2
- 1-Methyl-1-[(naphthalen-2-yl)oxy]naphthalen-2(1H)-one64954-41-2C21H16O2
- 9-(2-Methylphenyl)-9H-fluorene-9-carboxylic acid88172-52-5C21H16O2
- Benz[a]anthracene-7-methanol-13C 7-Acetate1391053-07-8C21H16O2
- 3-Hydroxy-2,3-diphenyl-2,3-dihydro-1H-inden-1-one65908-37-4C21H16O2
- (9H-Fluoren-4-yl)(2-methoxyphenyl)methanone63189-20-8C21H16O2
- 1-(3-Ethenylnaphthalen-1-yl)-3-phenylpropane-1,3-dione923267-81-6C21H16O2
- 3-(3-Phenoxyphenyl)-1-phenylprop-2-en-1-one332950-87-5C21H16O2
- 9,9-Diphenylbicyclo[5.2.0]nona-3,5-diene-2,8-dione6258-31-7C21H16O2
- 1-(Benzyloxy)-3-(4-ethynylphenoxy)benzene3078408-57-5C21H16O2
- Phenyl 2-(9H-fluoren-9-yl)acetate2564797-99-3C21H16O2
- 9H-Fluorene-9-carboxylic acid, 4-methylphenyl ester2005-11-0C21H16O2
- p-Tolyl(9H-xanthen-2-yl)methanone2205948-18-9C21H16O2
- 8-Hydroxy-3-hydroxymethylcholanthrene177327-85-4C21H16O2
- 5'-Methyl-[1,1':2',1''-terphenyl]-2,6-dicarbaldehyde2917694-21-2C21H16O2
Frequently asked questions
What is the molar mass of C21H16O2?
The molar mass of C21H16O2 is 300.36 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms and 2 oxygen atoms. The monoisotopic mass is 301.1184 Da.
How many compounds have the formula C21H16O2?
CompoundList lists 76 compounds with the molecular formula C21H16O2, including 1,1'-Methylenebis(2-naphthalenol), (R)-(+)-2'-Methoxy-(1,1'-binaphthalen)-2-ol, 1-Pyrenylmethyl methacrylate. 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 C21H16O2?
C21H16O2 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.