Molecular formula

C₂₁H₁₆O₈

23 compounds have this formula on CompoundList.

Molar mass: 396.35g/mol
Monoisotopic mass: 396.0845Da
Atoms: 45
Elements: 3
Rings plus double bonds: 14

The formula C21H16O8 describes a molecule made of 21 carbon atoms, 16 hydrogen atoms and 8 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 × 2163.64%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 164.07%
1.008 × 16 = 16.128 g/mol
O Oxygen × 832.29%
15.999 × 8 = 127.992 g/mol

Look up another formula

Compounds with the formula C21H16O8

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

Showing 1 to 23 of 23 compounds

Aklanonic acid

CAS 91432-47-2C₂₁H₁₆O₈

5-(Acetyloxy)-3-[4-(acetyloxy)phenyl]-4-oxo-4H-chromen-7-yl acetate

CAS 5995-97-1C₂₁H₁₆O₈

Apigenin triacetate

CAS 3316-46-9C₂₁H₁₆O₈

Emodin triacetate

CAS 6030-60-0C₂₁H₁₆O₈

Triacetyl Aloe-emodin (Impurity A)

CAS 25395-11-3C₂₁H₁₆O₈

4'-Demethyldehydropodophyllotoxin

CAS 117669-31-5C₂₁H₁₆O₈

2-[4,5-Dihydroxy-3-(1-hydroxy-3-oxopent-1-enyl)-9,10-dioxoanthracen-2-yl]acetic acid

C₂₁H₁₆O₈

Benzo(b)cyclopent(2,3)indeno(4,5-E)(1,4)dioxin-6,8,9(8ah)-trione, 11a,11b-dihydro-4,7,8a-trihydroxy-2,11,11b-trimethyl-

CAS 220178-94-9C₂₁H₁₆O₈

4H-1-Benzopyran-4-one, 7-(acetyloxy)-2-[3,4-bis(acetyloxy)phenyl]-

CAS 326621-73-2C₂₁H₁₆O₈

3,3'-Methylenebis(4-hydroxy-7-methoxy-2H-1-benzopyran-2-one)

CAS 1821-14-3C₂₁H₁₆O₈

3,5,6-Trimethoxy-3',4'-methylene-dioxyfurano[2,3:7,8]flavone

CAS 77970-08-2C₂₁H₁₆O₈

3,3'-Methylenebis(4-hydroxy-5-methoxy-2H-chromen-2-one)

CAS 102242-46-6C₂₁H₁₆O₈

(Z)-(6-Acetoxy-2-(benzo[d][1,3]dioxol-5-ylmethylene)-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl acetate

CAS 1007684-11-8C₂₁H₁₆O₈

3-Methyl-9,10-dioxo-9,10-dihydroanthracene-1,4,5-triyl triacetate

CAS 78226-90-1C₂₁H₁₆O₈

2-[(Acetyloxy)methyl]-9,10-dioxo-9,10-dihydroanthracene-1,3-diyl diacetate

CAS 61434-47-7C₂₁H₁₆O₈

4',6,7-Trihydroxyisoflavone triacetate

CAS 20816-28-8C₂₁H₁₆O₈

4-[4-(Acetyloxy)phenyl]-2-oxo-2H-1-benzopyran-5,7-diyl diacetate

CAS 97746-21-9C₂₁H₁₆O₈

(S)-3-Acetyl-3,4-dihydro-3,5,12-trihydroxy-10-methoxy-1,6,11(2H)-naphthacenetrione (90%)

CAS 32469-41-3C₂₁H₁₆O₈

3,3'-Methylenebis(4,7-dihydroxy-5-methyl-2H-1-benzopyran-2-one)

CAS 111518-89-9C₂₁H₁₆O₈

6-Methyl-9,10-dioxo-9,10-dihydroanthracene-1,2,5-triyl triacetate

CAS 10384-07-3C₂₁H₁₆O₈

2,6,7-Trihydroxy-9-(4-hydroxy-3,5-dimethoxyphenyl)-3H-xanthen-3-one

CAS 223663-92-1C₂₁H₁₆O₈

3,8,12-Trimethoxybenzo[1,2-b:4,5-b']bisbenzofuran-2,6,9-triol

CAS 58535-74-3C₂₁H₁₆O₈

(7S)-6,7,11-Trihydroxy-9-(2-hydroxyacetyl)-4-methoxy-7,8-dihydrotetracene-5,12-dione

CAS 80948-70-5C₂₁H₁₆O₈

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What is the molar mass of C21H16O8?

The molar mass of C21H16O8 is 396.35 g/mol, calculated from standard atomic weights for 21 carbon atoms, 16 hydrogen atoms and 8 oxygen atoms. The monoisotopic mass is 396.0845 Da.

How many compounds have the formula C21H16O8?

CompoundList lists 23 compounds with the molecular formula C21H16O8, including Aklanonic acid, 5-(Acetyloxy)-3-[4-(acetyloxy)phenyl]-4-oxo-4H-chromen-7-yl acetate, Apigenin triacetate. 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 C21H16O8?

C21H16O8 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.