Molecular formula
C18H18N2O3S
368 compounds have this formula on CompoundList.
- Molar mass
- 342.41g/mol
- Monoisotopic mass
- 342.1038Da
- Atoms
- 42
- Elements
- 5
- Rings plus double bonds
- 11
The formula C18H18N2O3S describes a molecule made of 18 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 3 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 × 1863.14%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 185.30%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 28.18%14.007 × 2 = 28.014 g/mol
- O Oxygen × 314.02%15.999 × 3 = 47.997 g/mol
- S Sulfur × 19.36%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C18H18N2O3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 301 to 368 of 368 compounds
![5-[(E)-2-(4-Methylphenyl)ethenyl]sulfonyl-3,4-dihydro-1H-1,5-benzodiazepin-2-one chemical structure, C18H18N2O3S, CAS 1356810-44-0](/s/RRNWAFUVCFBTJZ-ACCUITESSA-N.svg)
5-[(E)-2-(4-Methylphenyl)ethenyl]sulfonyl-3,4-dihydro-1H-1,5-benzodiazepin-2-one
CAS 1356810-44-0C18H18N2O3S
5-Methoxy-2,4-dimethyl-N-(3-quinolinyl)benzenesulfonamide
CAS 1374679-31-8C18H18N2O3S
2-Methoxy-4,5-dimethyl-N-(3-quinolinyl)benzenesulfonamide
CAS 1374684-15-7C18H18N2O3S
4-Ethoxy-3-methyl-N-(3-quinolinyl)benzenesulfonamide
CAS 1374680-13-3C18H18N2O3S
5-Ethyl-2-methoxy-N-(3-quinolinyl)benzenesulfonamide
CAS 1374682-57-1C18H18N2O3S
4-Methoxy-2,5-dimethyl-N-(3-quinolinyl)benzenesulfonamide
CAS 1374683-73-4C18H18N2O3S
2-Ethoxy-5-methyl-N-(3-quinolinyl)benzenesulfonamide
CAS 1374684-73-7C18H18N2O3S
4-(1-Benzothiophen-3-yl)-N-(4-cyanooxan-4-yl)-4-oxobutanamide
CAS 1424044-18-7C18H18N2O3S
![N-(2-Methoxy-2-(3-methoxyphenyl)ethyl)benzo[d]thiazole-6-carboxamide chemical structure, C18H18N2O3S, CAS 1798038-61-5](/s/GYGTVQYAIFRZKV-UHFFFAOYSA-N.svg)
N-(2-Methoxy-2-(3-methoxyphenyl)ethyl)benzo[d]thiazole-6-carboxamide
CAS 1798038-61-5C18H18N2O3S
![(E)-N-[2-(1,3-Benzoxazol-2-yl)propyl]-2-phenylethenesulfonamide chemical structure, C18H18N2O3S, CAS 1436373-55-5](/s/AYJCDAQQKCIDTD-VAWYXSNFSA-N.svg)
(E)-N-[2-(1,3-Benzoxazol-2-yl)propyl]-2-phenylethenesulfonamide
CAS 1436373-55-5C18H18N2O3S
![N-(2-(Benzo[b]thiophen-2-yl)-2-hydroxypropyl)-5-cyclopropylisoxazole-3-carboxamide chemical structure, C18H18N2O3S, CAS 2034263-31-3](/s/SEWUHJIBSSVIKY-UHFFFAOYSA-N.svg)
N-(2-(Benzo[b]thiophen-2-yl)-2-hydroxypropyl)-5-cyclopropylisoxazole-3-carboxamide
CAS 2034263-31-3C18H18N2O3S
N-(4-Acetylphenyl)-2-((tetrahydrothiophen-3-yl)oxy)isonicotinamide
CAS 2034428-77-6C18H18N2O3S
N-(3-Acetylphenyl)-2-((tetrahydrothiophen-3-yl)oxy)nicotinamide
CAS 2034390-35-5C18H18N2O3S
![N-[2-(5-Acetylthiophen-2-yl)ethyl]-6-methoxy-1H-indole-2-carboxamide chemical structure, C18H18N2O3S, CAS 2034437-36-8](/s/YKPDWUMUIYTGFV-UHFFFAOYSA-N.svg)
N-[2-(5-Acetylthiophen-2-yl)ethyl]-6-methoxy-1H-indole-2-carboxamide
CAS 2034437-36-8C18H18N2O3S
![(E)-N-[2-(2,3-Dihydroindol-1-yl)-2-oxoethyl]-2-phenylethenesulfonamide chemical structure, C18H18N2O3S, CAS 1808384-18-0](/s/KSYQUENUYMYRGZ-ACCUITESSA-N.svg)
(E)-N-[2-(2,3-Dihydroindol-1-yl)-2-oxoethyl]-2-phenylethenesulfonamide
CAS 1808384-18-0C18H18N2O3S
![N-[(3-Benzenesulfonamidophenyl)methyl]-N-methylbut-2-ynamide chemical structure, C18H18N2O3S, CAS 1935740-61-6](/s/SJCFTGCZOJNVRN-UHFFFAOYSA-N.svg)
N-[(3-Benzenesulfonamidophenyl)methyl]-N-methylbut-2-ynamide
CAS 1935740-61-6C18H18N2O3S
![N-(2-Hydroxy-3-methoxy-2-phenylpropyl)benzo[d]thiazole-2-carboxamide chemical structure, C18H18N2O3S, CAS 2034567-69-4](/s/SEIPJBVGJOJXCJ-UHFFFAOYSA-N.svg)
N-(2-Hydroxy-3-methoxy-2-phenylpropyl)benzo[d]thiazole-2-carboxamide
CAS 2034567-69-4C18H18N2O3S
Fmoc-D-cys-NH2
CAS 2985073-62-7C18H18N2O3S
![N-[2-Hydroxy-2-methyl-3-(thiophen-3-yl)propyl]-5-phenyl-1,2-oxazole-3-carboxamide chemical structure, C18H18N2O3S, CAS 2097884-61-0](/s/SDODAJZGYJGNJB-UHFFFAOYSA-N.svg)
N-[2-Hydroxy-2-methyl-3-(thiophen-3-yl)propyl]-5-phenyl-1,2-oxazole-3-carboxamide
CAS 2097884-61-0C18H18N2O3S
![N-[2-(Furan-2-yl)-2-(thiophen-2-yl)ethyl]-4,5,6,7-tetrahydro-1,2-benzoxazole-3-carboxamide chemical structure, C18H18N2O3S, CAS 2097900-41-7](/s/JLJWHCUVXPCGFA-UHFFFAOYSA-N.svg)
N-[2-(Furan-2-yl)-2-(thiophen-2-yl)ethyl]-4,5,6,7-tetrahydro-1,2-benzoxazole-3-carboxamide
CAS 2097900-41-7C18H18N2O3S
![1-{2-[4-(Furan-2-yl)phenyl]-2-hydroxyethyl}-3-[(thiophen-2-yl)methyl]urea chemical structure, C18H18N2O3S, CAS 2097902-85-5](/s/YEZVMFNOPYXLQN-UHFFFAOYSA-N.svg)
1-{2-[4-(Furan-2-yl)phenyl]-2-hydroxyethyl}-3-[(thiophen-2-yl)methyl]urea
CAS 2097902-85-5C18H18N2O3S
![N-{2-Hydroxy-2-[4-(thiophen-3-yl)phenyl]ethyl}-3,5-dimethyl-1,2-oxazole-4-carboxamide chemical structure, C18H18N2O3S, CAS 2097917-01-4](/s/LVKFTLSWIJWYTG-UHFFFAOYSA-N.svg)
N-{2-Hydroxy-2-[4-(thiophen-3-yl)phenyl]ethyl}-3,5-dimethyl-1,2-oxazole-4-carboxamide
CAS 2097917-01-4C18H18N2O3S
![3-{[4-(Furan-2-yl)thiophen-2-yl]methyl}-1-(2-phenoxyethyl)urea chemical structure, C18H18N2O3S, CAS 2379948-61-3](/s/ASUSHCOVDVYKLN-UHFFFAOYSA-N.svg)
3-{[4-(Furan-2-yl)thiophen-2-yl]methyl}-1-(2-phenoxyethyl)urea
CAS 2379948-61-3C18H18N2O3S
![3-{[4-(Furan-3-yl)thiophen-2-yl]methyl}-1-(2-phenoxyethyl)urea chemical structure, C18H18N2O3S, CAS 2380033-46-3](/s/DRQDJFZCXPIWSZ-UHFFFAOYSA-N.svg)
3-{[4-(Furan-3-yl)thiophen-2-yl]methyl}-1-(2-phenoxyethyl)urea
CAS 2380033-46-3C18H18N2O3S
- 2-(3,4-Dimethylphenyl)-4-(prop-2-en-1-yl)-3,4-dihydro-2H-1lambda6,2,4-benzothiadiazine-1,1,3-trione2548993-67-3C18H18N2O3S
- 2-(3,5-Dimethylphenyl)-4-(prop-2-en-1-yl)-3,4-dihydro-2H-1lambda6,2,4-benzothiadiazine-1,1,3-trione2549000-44-2C18H18N2O3S
- 2-Cyano-N-[2-(3,4-dimethoxyphenyl)ethyl]-3-(thiophen-2-yl)prop-2-enamide850370-80-8C18H18N2O3S
- N-Cyclopropyl-4-(2-phenylethenesulfonamido)benzamide850178-46-0C18H18N2O3S
- N-[2-(2-Oxopyrrolidin-1-yl)phenyl]-2-phenylethene-1-sulfonamide1031097-47-8C18H18N2O3S
- Phenylmethylcarbamic acid 3-(3-oxo-1,2-benzisothiazol-2(3H)-yl)propyl ester199172-92-4C18H18N2O3S
- (3-Methylphenyl)carbamic acid 3-(3-oxo-1,2-benzisothiazol-2(3H)-yl)propyl ester199172-96-8C18H18N2O3S
- 4-[[(6-Hydroxy-4,5,7-trimethyl-1,3-benzothiazol-2-yl)amino]methyl]benzoic acid120165-40-4C18H18N2O3S
- Thieno[2,3-d]pyrimidine-3(4H)-acetic acid, 5-[4-(1,1-dimethylethyl)phenyl]-4-oxo-1082403-22-2C18H18N2O3S
- 1-(Benzo[d][1,3]dioxol-5-ylmethyl)-3-(thiochroman-4-yl)urea1280984-65-7C18H18N2O3S
- 2H-1,4-Benzoxazin-3(4H)-one, 6-[(2-amino-5,6-dihydro-4H-cyclopenta[b]thien-3-yl)carbonyl]-2,4-dimethyl-1082867-23-9C18H18N2O3S
- N-(2-Hydroxy-3-phenylpropyl)quinoline-8-sulfonamide2034266-12-9C18H18N2O3S
- 4-[5-(3-Methylphenyl)-3-(thiophen-3-yl)-4,5-dihydro-1H-pyrazol-1-yl]-4-oxobutanoic acid1795537-87-9C18H18N2O3S
- 5-Ethyl-2-methoxy-N-(quinolin-8-yl)benzene-1-sulfonamide1790672-93-3C18H18N2O3S
- 1-[2-[4-(Furan-2-yl)thiophen-2-yl]-2-hydroxyethyl]-3-(2-methylphenyl)urea2320538-62-1C18H18N2O3S
- 3-{2-[5-(Furan-2-yl)thiophen-2-yl]-2-hydroxyethyl}-1-(2-methylphenyl)urea2320539-05-5C18H18N2O3S
- 1-Benzyl-3-{2-[4-(furan-2-yl)thiophen-2-yl]-2-hydroxyethyl}urea2320544-27-0C18H18N2O3S
- 1-Benzyl-3-{2-[5-(furan-2-yl)thiophen-2-yl]-2-hydroxyethyl}urea2309347-86-0C18H18N2O3S
- 2-(3,4-Dimethoxyphenyl)-4-(4-methoxyphenyl)-1H-imidazole-5-thiol2320268-33-3C18H18N2O3S
- 3-{2-Hydroxy-2-[5-(thiophen-2-yl)furan-2-yl]ethyl}-1-(2-methylphenyl)urea2320538-91-6C18H18N2O3S
- 1-Benzyl-3-{2-hydroxy-2-[5-(thiophen-2-yl)furan-2-yl]ethyl}urea2320859-92-3C18H18N2O3S
- 2-[4-(Benzenesulfonyl)piperidin-1-yl]-1,3-benzoxazole2380180-34-5C18H18N2O3S
- 2-(2H-1,3-Benzodioxol-5-yl)-N-benzyl-1,3-thiazolidine-3-carboxamide6036-16-4C18H18N2O3S
- Methyl (2Z)-3-(cyclohex-2-en-1-yl)-4-oxo-2-(phenylimino)-3,4-dihydro-2H-1,3-thiazine-6-carboxylate16238-46-3C18H18N2O3S
- 4-[2-(3,4,5-Trimethoxyphenyl)-1,3-thiazol-4-yl]aniline54883-31-7C18H18N2O3S
- 2-{[(2,6-Dimethylphenyl)carbamothioyl]carbamoyl}phenyl acetate62204-74-4C18H18N2O3S
- 4-Hydroxy-N-phenylbenzene-1-sulfonamide--aniline (1/1)585533-73-9C18H18N2O3S
- Ethyl 3-oxo-2-(2-phenylhydrazinylidene)-4-(phenylsulfanyl)butanoate677606-82-5C18H18N2O3S
- 1-(Cyclopropylmethyl)-3-[(4-methoxyphenyl)methyl]-1H,2H,3H,4H-thieno[3,2-d]pyrimidine-2,4-dione2741919-26-4C18H18N2O3S
- 3-{2-[5-(Furan-2-yl)thiophen-2-yl]ethyl}-1-(2-methoxyphenyl)urea2742051-64-3C18H18N2O3S
- N-[(4-Hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-N'-phenylethanediamide2742006-19-3C18H18N2O3S
- Ethyl 2-(4-cyclopropyl-1,3-thiazol-2-yl)-2-hydroxy-2-(1H-indol-3-yl)acetate2171995-83-6C18H18N2O3S
- tert-Butyl N-[3-(1,3-benzothiazol-2-yl)-4-hydroxyphenyl]carbamate2413885-75-1C18H18N2O3S
- 2-(4-Aminophenyl)-1,3-benzothiazol-6-yl tert-butyl carbonate2757961-23-0C18H18N2O3S
- tert-Butyl 6-(5-cyanothiophen-2-yl)-3,4-dihydro-2H-1,4-benzoxazine-4-carboxylate2680741-44-8C18H18N2O3S
- Benzyl N-(3-cyano-6-methoxy-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)carbamate2680705-22-8C18H18N2O3S
- 4-[4-[(3,4,5-Trimethoxyphenyl)methyl]-2-thiazolyl]pyridine1202517-66-5C18H18N2O3S
- 2-[(6-Hydroxy-4,5,7-trimethyl-1,3-benzothiazol-2-yl)amino]phenyl acetate761364-78-7C18H18N2O3S
- 2-((2-(2-((2-Methylbenzyl)thio)acetyl)hydrazono)methyl)benzoic acid902052-65-7C18H18N2O3S
- Ethyl 2-[(4-methoxyphenyl)methylamino]thieno[3,2-b]pyridine-3-carboxylate1209007-36-2C18H18N2O3S
- Ethyl 2-[(4-methoxyphenyl)methylamino]thieno[3,2-c]pyridine-3-carboxylate1209007-34-0C18H18N2O3S
- Ethyl 2-[(4-methoxyphenyl)methylamino]thieno[2,3-b]pyridine-3-carboxylate1209007-32-8C18H18N2O3S
- (R)-5-((R)-Oxiran-2-yl)-3-phenyl-1-tosyl-4,5-dihydro-1H-pyrazole2768073-95-4C18H18N2O3S
- (R)-5-((S)-Oxiran-2-yl)-3-phenyl-1-tosyl-4,5-dihydro-1H-pyrazole2768073-96-5C18H18N2O3S
Frequently asked questions
What is the molar mass of C18H18N2O3S?
The molar mass of C18H18N2O3S is 342.41 g/mol, calculated from standard atomic weights for 18 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 342.1038 Da.
How many compounds have the formula C18H18N2O3S?
CompoundList lists 368 compounds with the molecular formula C18H18N2O3S, including 5-[(E)-2-(4-Methylphenyl)ethenyl]sulfonyl-3,4-dihydro-1H-1,5-benzodiazepin-2-one, 5-Methoxy-2,4-dimethyl-N-(3-quinolinyl)benzenesulfonamide, 2-Methoxy-4,5-dimethyl-N-(3-quinolinyl)benzenesulfonamide. 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 C18H18N2O3S?
C18H18N2O3S has a degree of unsaturation of 11. 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.