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Molecular formula

C18H13NOS

21 compounds have this formula on CompoundList.

Molar mass
291.37g/mol
Monoisotopic mass
291.0718Da
Atoms
34
Elements
5
Rings plus double bonds
13

The formula C18H13NOS describes a molecule made of 18 carbon atoms, 13 hydrogen atoms, 1 nitrogen atom, 1 oxygen atom 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 × 1874.20%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 134.50%
    1.008 × 13 = 13.104 g/mol
  • N Nitrogen × 14.81%
    14.007 × 1 = 14.007 g/mol
  • O Oxygen × 15.49%
    15.999 × 1 = 15.999 g/mol
  • S Sulfur × 111.00%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H13NOS

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

Showing 1 to 21 of 21 compounds

10-Phenylphenothiazine-5-oxide chemical structure, C18H13NOS, CAS 23099-78-7
10-Phenylphenothiazine-5-oxide
CAS 23099-78-7C18H13NOS
1-Benzo[a]phenothiazin-12-ylethanone chemical structure, C18H13NOS, CAS 7310-85-2
1-Benzo[a]phenothiazin-12-ylethanone
CAS 7310-85-2C18H13NOS
2-(Naphthalen-1-ylmethylsulfanyl)-benzooxazole chemical structure, C18H13NOS, CAS 300862-36-6
2-(Naphthalen-1-ylmethylsulfanyl)-benzooxazole
CAS 300862-36-6C18H13NOS
4-(2-Methyl-1-benzofuran-3-yl)-2-phenyl-1,3-thiazole chemical structure, C18H13NOS, CAS 620569-33-7
4-(2-Methyl-1-benzofuran-3-yl)-2-phenyl-1,3-thiazole
CAS 620569-33-7C18H13NOS
7-Acetyl-7H-benzo(c)phenothiazine chemical structure, C18H13NOS, CAS 5395-10-8
7-Acetyl-7H-benzo(c)phenothiazine
CAS 5395-10-8C18H13NOS
(2E)-1-Phenyl-3-(2-phenyl-4-thiazolyl)-2-propen-1-one chemical structure, C18H13NOS, CAS 1619995-20-8
(2E)-1-Phenyl-3-(2-phenyl-4-thiazolyl)-2-propen-1-one
CAS 1619995-20-8C18H13NOS
Phenyl(2-((2-thienylmethylene)amino)phenyl)methanone chemical structure, C18H13NOS, CAS 41242-38-0
Phenyl(2-((2-thienylmethylene)amino)phenyl)methanone
CAS 41242-38-0C18H13NOS
5-(4-Phenoxyphenyl)-5H-thieno[2,3-c]pyrrole chemical structure, C18H13NOS, CAS 338780-38-4
5-(4-Phenoxyphenyl)-5H-thieno[2,3-c]pyrrole
CAS 338780-38-4C18H13NOS
2-(Naphthalen-2-yloxymethyl)-1,3-benzothiazole chemical structure, C18H13NOS, CAS 339566-23-3
2-(Naphthalen-2-yloxymethyl)-1,3-benzothiazole
CAS 339566-23-3C18H13NOS
2,3a-Diphenyl-3aH-pyrano[2,3-d][1,3]thiazole chemical structure, C18H13NOS, CAS 86223-88-3
2,3a-Diphenyl-3aH-pyrano[2,3-d][1,3]thiazole
CAS 86223-88-3C18H13NOS
2-Phenyl-5,6-dihydrobenzo[h][1,3]benzoxazine-4-thione chemical structure, C18H13NOS, CAS 710985-63-0
2-Phenyl-5,6-dihydrobenzo[h][1,3]benzoxazine-4-thione
CAS 710985-63-0C18H13NOS
Benzoxazole, 2-[5-(4-methylphenyl)-2-thienyl]- chemical structure, C18H13NOS, CAS 61100-22-9
Benzoxazole, 2-[5-(4-methylphenyl)-2-thienyl]-
CAS 61100-22-9C18H13NOS
6-(1,3-Benzothiazol-2-yl)-2-naphthyl methyl ether chemical structure, C18H13NOS, CAS 1374581-08-4
6-(1,3-Benzothiazol-2-yl)-2-naphthyl methyl ether
CAS 1374581-08-4C18H13NOS
1-Phenyl-3-(2-phenyl-1,3-thiazol-4-yl)prop-2-en-1-one chemical structure, C18H13NOS, CAS 116227-86-2
1-Phenyl-3-(2-phenyl-1,3-thiazol-4-yl)prop-2-en-1-one
CAS 116227-86-2C18H13NOS
2-(5-Methylthiophen-2-yl)-1H-benzo[g]indole-3-carbaldehyde chemical structure, C18H13NOS, CAS 590397-83-4
2-(5-Methylthiophen-2-yl)-1H-benzo[g]indole-3-carbaldehyde
CAS 590397-83-4C18H13NOS
9-(Pyridin-4-yl)-9H-thioxanthen-9-ol chemical structure, C18H13NOS, CAS 16244-84-1
9-(Pyridin-4-yl)-9H-thioxanthen-9-ol
CAS 16244-84-1C18H13NOS
2-(4-Methoxyphenyl)naphtho[2,1-d]thiazole chemical structure, C18H13NOS, CAS 2123451-90-9
2-(4-Methoxyphenyl)naphtho[2,1-d]thiazole
CAS 2123451-90-9C18H13NOS
2-(2-Methoxyphenyl)naphtho[2,1-d]thiazole chemical structure, C18H13NOS, CAS 2123452-01-5
2-(2-Methoxyphenyl)naphtho[2,1-d]thiazole
CAS 2123452-01-5C18H13NOS
2-(3-Methoxyphenyl)naphtho[2,1-d]thiazole chemical structure, C18H13NOS, CAS 2123451-96-5
2-(3-Methoxyphenyl)naphtho[2,1-d]thiazole
CAS 2123451-96-5C18H13NOS
(3aS,8aR)-2-(Benzo[b]thiophen-2-yl)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole chemical structure, C18H13NOS, CAS 2757083-98-8
(3aS,8aR)-2-(Benzo[b]thiophen-2-yl)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole
CAS 2757083-98-8C18H13NOS
(3aR,8aS)-2-(Benzo[b]thiophen-2-yl)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole chemical structure, C18H13NOS, CAS 2757084-03-8
(3aR,8aS)-2-(Benzo[b]thiophen-2-yl)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole
CAS 2757084-03-8C18H13NOS

Frequently asked questions

What is the molar mass of C18H13NOS?

The molar mass of C18H13NOS is 291.37 g/mol, calculated from standard atomic weights for 18 carbon atoms, 13 hydrogen atoms, 1 nitrogen atom, 1 oxygen atom and 1 sulfur atom. The monoisotopic mass is 291.0718 Da.

How many compounds have the formula C18H13NOS?

CompoundList lists 21 compounds with the molecular formula C18H13NOS, including 10-Phenylphenothiazine-5-oxide, 1-Benzo[a]phenothiazin-12-ylethanone, 2-(Naphthalen-1-ylmethylsulfanyl)-benzooxazole. 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 C18H13NOS?

C18H13NOS has a degree of unsaturation of 13. 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.