Molecular formula

C₂₁H₃₁N₅O₃

19 compounds have this formula on CompoundList.

Molar mass: 401.51g/mol
Monoisotopic mass: 409.2929Da
Atoms: 60
Elements: 4
Rings plus double bonds: 9

The formula C21H31N5O3 describes a molecule made of 21 carbon atoms, 31 hydrogen atoms, 5 nitrogen atoms and 3 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 × 2162.82%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 317.78%
1.008 × 31 = 31.248 g/mol
N Nitrogen × 517.44%
14.007 × 5 = 70.035 g/mol
O Oxygen × 311.95%
15.999 × 3 = 47.997 g/mol

Look up another formula

Compounds with the formula C21H31N5O3

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

Showing 1 to 19 of 19 compounds

5-Methylurapidil

CAS 34661-85-3C₂₁H₃₁N₅O₃

6-Hydroxybuspirone

CAS 125481-61-0C₂₁H₃₁N₅O₃

5-Nitro-N-(2,2,6,6-tetramethylpiperidin-4-yl)spiro[benzimidazole-2,1'-cyclohexan]-4-amine 1-oxide

CAS 302558-37-8C₂₁H₃₁N₅O₃

6-Hydroxybuspirone, (6S)-

CAS 477930-31-7C₂₁H₃₁N₅O₃

5-Hydroxy buspirone

CAS 105496-33-1C₂₁H₃₁N₅O₃

Buspirone N-oxide

CAS 220747-81-9C₂₁H₃₁N₅O₃

6-Hydroxybuspirone, (6R)-

CAS 477930-30-6C₂₁H₃₁N₅O₃

6-Hydroxy buspirone-d8

CAS 1189644-16-3C₂₁H₃₁N₅O₃

N-Cyclooctyl-3-(3-nitro-1,2,4-triazol-1-yl)adamantane-1-carboxamide

CAS 445260-23-1C₂₁H₃₁N₅O₃

1-[2-(4-Ethyl-1-piperazinyl)acetyl]-N-(3-methylphenyl)-3-oxo-2-piperazineacetamide

CAS 1046448-03-6C₂₁H₃₁N₅O₃

2-Oxaspiro(4.4)nonane-1-carboxamide, 3-oxo-N-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-

CAS 125498-83-1C₂₁H₃₁N₅O₃

1'-(2-Methyl-3-oxo-2,3,5,6,7,8-hexahydrocinnoline-6-carbonyl)-[1,4'-bipiperidine]-4'-carboxamide

CAS 2034597-00-5C₂₁H₃₁N₅O₃

5-Hydroxy buspirone-d8

CAS 1330164-16-3C₂₁H₃₁N₅O₃

Buspirone impurity 43

CAS 220747-82-0C₂₁H₃₁N₅O₃

tert-Butyl 4-(2-((5-amino-4-methyl-1-phenyl-1H-pyrazol-3-yl)oxy)ethyl)piperazine-1-carboxylate

CAS 1414569-72-4C₂₁H₃₁N₅O₃

tert-Butyl 4-(6-(cyclopentylmethyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carboxylate

CAS 1189771-31-0C₂₁H₃₁N₅O₃

6-({3-[4-(2-Ethoxyphenyl)piperazin-1-yl]propyl}amino)-1,3-dimethylpyrimidine-2,4(1H,3H)-dione

CAS 34661-76-2C₂₁H₃₁N₅O₃

N-Cyclopentyl-5,6,7,8-tetrahydro-6-methyl-8-oxo-7-propyl-1-(1-pyrrolidinylcarbonyl)imidazo[1,5-a]pyrazine-6-carboxamide

CAS 1189909-97-4C₂₁H₃₁N₅O₃

6-(Hexylamino)-1,2,4,5-tetrazin-3-yl 4-(hexyloxy)benzoate

CAS 95573-65-2C₂₁H₃₁N₅O₃

Frequently asked questions

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What is the molar mass of C21H31N5O3?

The molar mass of C21H31N5O3 is 401.51 g/mol, calculated from standard atomic weights for 21 carbon atoms, 31 hydrogen atoms, 5 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 409.2929 Da.

How many compounds have the formula C21H31N5O3?

CompoundList lists 19 compounds with the molecular formula C21H31N5O3, including 5-Methylurapidil, 6-Hydroxybuspirone, 5-Nitro-N-(2,2,6,6-tetramethylpiperidin-4-yl)spiro[benzimidazole-2,1'-cyclohexan]-4-amine 1-oxide. 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 C21H31N5O3?

C21H31N5O3 has a degree of unsaturation of 9. 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.