Molecular formula

C₂₁H₁₅Br

7 compounds have this formula on CompoundList.

Molar mass: 347.25g/mol
Monoisotopic mass: 346.0357Da
Atoms: 37
Elements: 3
Rings plus double bonds: 14

The formula C21H15Br describes a molecule made of 21 carbon atoms, 15 hydrogen atoms and 1 bromine atom. 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 × 2172.64%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 154.35%
1.008 × 15 = 15.120 g/mol
Br Bromine × 123.01%
79.904 × 1 = 79.904 g/mol

Look up another formula

Compounds with the formula C21H15Br

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

Showing 1 to 7 of 7 compounds

Cyclopropenylium, triphenyl-, bromide

CAS 23147-72-0C₂₁H₁₅Br

1-(Bromo(1-naphthyl)methyl)naphthalene

CAS 5467-20-9C₂₁H₁₅Br

9-[2-(Bromomethyl)phenyl]phenanthrene

CAS 88986-01-0C₂₁H₁₅Br

1-(4-Bromophenyl)-1-phenyl-1H-indene

CAS 52033-61-1C₂₁H₁₅Br

2-Bromo-1',3'-dihydrospiro[fluorene-9,2'-indene]

CAS 401941-41-1C₂₁H₁₅Br

1,1'-[3-(4-Bromophenyl)cycloprop-2-ene-1,2-diyl]dibenzene

CAS 62634-74-6C₂₁H₁₅Br

1,1'-[3-(4-Bromophenyl)cycloprop-1-ene-1,2-diyl]dibenzene

CAS 62701-51-3C₂₁H₁₅Br

Frequently asked questions

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What is the molar mass of C21H15Br?

The molar mass of C21H15Br is 347.25 g/mol, calculated from standard atomic weights for 21 carbon atoms, 15 hydrogen atoms and 1 bromine atom. The monoisotopic mass is 346.0357 Da.

How many compounds have the formula C21H15Br?

CompoundList lists 7 compounds with the molecular formula C21H15Br, including Cyclopropenylium, triphenyl-, bromide, 1-(Bromo(1-naphthyl)methyl)naphthalene, 9-[2-(Bromomethyl)phenyl]phenanthrene. 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 C21H15Br?

C21H15Br 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.