Molecular formula

C₁₈H₁₈N₄O₂S

315 compounds have this formula on CompoundList.

Molar mass: 354.43g/mol
Monoisotopic mass: 354.1150Da
Atoms: 43
Elements: 5
Rings plus double bonds: 12

The formula C18H18N4O2S describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 2 oxygen atoms and 1 sulfur 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 × 1861.00%
12.011 × 18 = 216.198 g/mol
H Hydrogen × 185.12%
1.008 × 18 = 18.144 g/mol
N Nitrogen × 415.81%
14.007 × 4 = 56.028 g/mol
O Oxygen × 29.03%
15.999 × 2 = 31.998 g/mol
S Sulfur × 19.05%
32.06 × 1 = 32.060 g/mol

Look up another formula

Compounds with the formula C18H18N4O2S

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

Showing 301 to 315 of 315 compounds

Thiazolo[4,5-b]pyridine-7-carboxylic acid,2-(4-methyl-1-piperazinyl)-5-phenyl-

CAS 1313756-66-9C₁₈H₁₈N₄O₂S

3-Nitro-5-phenyl-N-(2-{[(pyridin-2-yl)methyl]sulfanyl}ethyl)-1H-pyrrol-2-amine

CAS 633313-13-0C₁₈H₁₈N₄O₂S

2-Cyclopropyl-N-(6-ethoxy-1,3-benzothiazol-2-yl)-6-methylpyrimidine-4-carboxamide

CAS 2415499-84-0C₁₈H₁₈N₄O₂S

5-[5-(Benzenesulfonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine-2-carbonitrile

CAS 2640953-49-5C₁₈H₁₈N₄O₂S

5-[6-Methyl-2-(methylsulfanyl)pyrimidin-4-yl]-2-phenyl-octahydropyrrolo[3,4-c]pyrrole-1,3-dione

CAS 2742026-57-7C₁₈H₁₈N₄O₂S

N-Methyl-N-[1-(pyridin-2-yl)azetidin-3-yl]quinoline-8-sulfonamide

CAS 2415489-97-1C₁₈H₁₈N₄O₂S

4-(5-{[1-(Thiophene-2-carbonyl)piperidin-4-yl]methyl}-1,2,4-oxadiazol-3-yl)pyridine

CAS 2415554-76-4C₁₈H₁₈N₄O₂S

5-Methoxy-2-[4-(pyridine-3-carbonyl)piperazin-1-yl]-1,3-benzothiazole

CAS 2770628-36-7C₁₈H₁₈N₄O₂S

N-Ethyl-2-(methylsulfanyl)-N-[(4-oxo-1,2,3,4-tetrahydroquinazolin-2-ylidene)methyl]pyridine-3-carboxamide

CAS 2411324-01-9C₁₈H₁₈N₄O₂S

N-(6-Ethoxy-1,3-benzothiazol-2-yl)-2-methyl-5H,6H,7H-cyclopenta[d]pyrimidine-4-carboxamide

CAS 2770583-65-6C₁₈H₁₈N₄O₂S

N-Methyl-N-[5-(2-methylphenyl)-1,2,4-triazin-3-yl]benzenemethanesulfonamide

CAS 1820942-27-5C₁₈H₁₈N₄O₂S

2-(2-{4H,5H,6H,7H-Thieno[3,2-c]pyridine-5-carbonyl}morpholin-4-yl)pyridine-3-carbonitrile

CAS 3054608-33-9C₁₈H₁₈N₄O₂S

6-(2-{4H,5H,6H,7H-Thieno[3,2-c]pyridine-5-carbonyl}morpholin-4-yl)pyridine-3-carbonitrile

CAS 3054537-67-3C₁₈H₁₈N₄O₂S

5-(2-{4H,5H,6H,7H-Thieno[3,2-c]pyridine-5-carbonyl}morpholin-4-yl)pyridine-2-carbonitrile

CAS 3054577-97-5C₁₈H₁₈N₄O₂S

4-[(2-Hydroxy-4-methoxyphenyl)methylideneamino]-3-[(4-methylphenyl)methyl]-1H-1,2,4-triazole-5-thione

C₁₈H₁₈N₄O₂S

Frequently asked questions

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What is the molar mass of C18H18N4O2S?

The molar mass of C18H18N4O2S is 354.43 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 2 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 354.1150 Da.

How many compounds have the formula C18H18N4O2S?

CompoundList lists 315 compounds with the molecular formula C18H18N4O2S, including Thiazolo[4,5-b]pyridine-7-carboxylic acid,2-(4-methyl-1-piperazinyl)-5-phenyl-, 3-Nitro-5-phenyl-N-(2-{[(pyridin-2-yl)methyl]sulfanyl}ethyl)-1H-pyrrol-2-amine, 2-Cyclopropyl-N-(6-ethoxy-1,3-benzothiazol-2-yl)-6-methylpyrimidine-4-carboxamide. 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 C18H18N4O2S?

C18H18N4O2S has a degree of unsaturation of 12. 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.