Molecular formula
C21H18N2O3S
140 compounds have this formula on CompoundList.
- Molar mass
- 378.45g/mol
- Monoisotopic mass
- 378.1038Da
- Atoms
- 45
- Elements
- 5
- Rings plus double bonds
- 14
The formula C21H18N2O3S describes a molecule made of 21 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 × 2166.65%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 184.79%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 27.40%14.007 × 2 = 28.014 g/mol
- O Oxygen × 312.68%15.999 × 3 = 47.997 g/mol
- S Sulfur × 18.47%32.06 × 1 = 32.060 g/mol
Look up another formula
Compounds with the formula C21H18N2O3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 140 compounds
2,6-Dimethoxy-4-(5-phenyl-4-(thiophen-2-yl)-1H-imidazol-2-yl)phenol
CAS 351353-48-5C21H18N2O3S
4-(3,5-Diphenyl-4,5-dihydro-pyrazol-1-yl)-benzenesulfonic acid
CAS 92708-87-7C21H18N2O3S
![[3-(2-Hydroxyphenyl)-5-(4-methoxyphenyl)-3,4-dihydropyrazol-2-yl]-thiophen-2-ylmethanone chemical structure, C21H18N2O3S, CAS 364740-06-7](/s/AXTQBBDRNAYVKG-UHFFFAOYSA-N.svg)
[3-(2-Hydroxyphenyl)-5-(4-methoxyphenyl)-3,4-dihydropyrazol-2-yl]-thiophen-2-ylmethanone
CAS 364740-06-7C21H18N2O3S
N-(3-Cyano-5-methyl-4-phenylthien-2-yl)-3,4-dimethoxybenzamide
CAS 445007-61-4C21H18N2O3S
![N-(Furan-2-ylmethyl)-N-[(7-methyl-2-oxo-1H-quinolin-3-yl)methyl]thiophene-2-carboxamide chemical structure, C21H18N2O3S, CAS 579447-30-6](/s/DYBUCRPSTHVHJY-UHFFFAOYSA-N.svg)
N-(Furan-2-ylmethyl)-N-[(7-methyl-2-oxo-1H-quinolin-3-yl)methyl]thiophene-2-carboxamide
CAS 579447-30-6C21H18N2O3S
![5-(3,4-Dimethoxyphenyl)-3-(4-methylphenyl)thieno[2,3-d]pyrimidin-4-one chemical structure, C21H18N2O3S, CAS 461440-18-6](/s/GCJQUOWNZRTBFH-UHFFFAOYSA-N.svg)
5-(3,4-Dimethoxyphenyl)-3-(4-methylphenyl)thieno[2,3-d]pyrimidin-4-one
CAS 461440-18-6C21H18N2O3S
![N-[2-Methyl-4-(phenylsulfanylmethyl)phenyl]-3-nitrobenzamide chemical structure, C21H18N2O3S, CAS 432512-51-1](/s/CCTDFOABYYEBJZ-UHFFFAOYSA-N.svg)
N-[2-Methyl-4-(phenylsulfanylmethyl)phenyl]-3-nitrobenzamide
CAS 432512-51-1C21H18N2O3S
N-(2-Methyl-5-nitrophenyl)-2-phenyl-2-(phenylsulfanyl)acetamide
CAS 335398-14-6C21H18N2O3S
N-(2-Methyl-3-nitrophenyl)-2-phenyl-2-(phenylsulfanyl)acetamide
CAS 349435-49-0C21H18N2O3S
RefChem:357278
CAS 554436-18-9C21H18N2O3S
![5-(4-Ethoxyphenyl)-3-(4-methoxyphenyl)thieno[2,3-d]pyrimidin-4-one chemical structure, C21H18N2O3S, CAS 342382-53-0](/s/AOUXHAWIJPBGJT-UHFFFAOYSA-N.svg)
5-(4-Ethoxyphenyl)-3-(4-methoxyphenyl)thieno[2,3-d]pyrimidin-4-one
CAS 342382-53-0C21H18N2O3S
![2-[1-(4-Methoxybenzoyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-5-yl]phenol chemical structure, C21H18N2O3S, CAS 871307-82-3](/s/XBNKTPIKADMMHV-UHFFFAOYSA-N.svg)
2-[1-(4-Methoxybenzoyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-5-yl]phenol
CAS 871307-82-3C21H18N2O3S
![5-({[(3-Methoxybenzoyl)oxy]imino}methyl)-2-[(4-methylphenyl)sulfanyl]pyridine chemical structure, C21H18N2O3S, CAS 338960-64-8](/s/VOQSKYFHLOAUCD-OEAKJJBVSA-N.svg)
5-({[(3-Methoxybenzoyl)oxy]imino}methyl)-2-[(4-methylphenyl)sulfanyl]pyridine
CAS 338960-64-8C21H18N2O3S
RefChem:357277
CAS 497172-11-9C21H18N2O3S
![1-Ethyl-6-(indolin-1-ylsulfonyl)benzo[cd]indol-2(1H)-one chemical structure, C21H18N2O3S, CAS 438489-31-7](/s/UYRJUACNDMJUKF-UHFFFAOYSA-N.svg)
1-Ethyl-6-(indolin-1-ylsulfonyl)benzo[cd]indol-2(1H)-one
CAS 438489-31-7C21H18N2O3S
5-Acetyl-4-(furan-2-yl)-6-methyl-2-phenacylsulfanyl-1,4-dihydropyridine-3-carbonitrile
CAS 5691-17-8C21H18N2O3S
(E)-3-(3,4-Dimethoxyphenyl)-2-(4-(4-methoxyphenyl)thiazol-2-yl)acrylonitrile
CAS 313687-66-0C21H18N2O3S
4-Methyl-n'-(2-oxo-1,2-diphenylethylidene)benzenesulfonohydrazide
CAS 68384-27-0C21H18N2O3S
N-(5-Benzyl-1,3-thiazol-2-yl)-7-methyl-1-oxo-3,4-dihydro-1H-isochromene-3-carboxamide
CAS 874466-44-1C21H18N2O3S
N-(5-Benzoyl-2-hydroxybenzyl)-2-(2-pyridinylsulfanyl)acetamide
CAS 381193-31-3C21H18N2O3S
![2-Ethyl-3-[(4-methoxyphenyl)methyl]thiochromeno[2,3-d]pyrimidine-4,5-dione chemical structure, C21H18N2O3S, CAS 879767-92-7](/s/YJTHCRXFLDDWJN-UHFFFAOYSA-N.svg)
2-Ethyl-3-[(4-methoxyphenyl)methyl]thiochromeno[2,3-d]pyrimidine-4,5-dione
CAS 879767-92-7C21H18N2O3S
![4-Methyl-N-[(Z)-(2-oxo-1,2-diphenylethylidene)amino]benzenesulfonamide chemical structure, C21H18N2O3S](/s/UKKUHNOVVHRCKS-XDOYNYLZSA-N.svg)
4-Methyl-N-[(Z)-(2-oxo-1,2-diphenylethylidene)amino]benzenesulfonamide
C21H18N2O3S
![(2E)-3-(3-Ethoxy-4-hydroxyphenyl)-2-[4-(4-methoxyphenyl)-1,3-thiazol-2-yl]prop-2-enenitrile chemical structure, C21H18N2O3S, CAS 330179-72-1](/s/HQZKAVQWRXQLIV-MHWRWJLKSA-N.svg)
(2E)-3-(3-Ethoxy-4-hydroxyphenyl)-2-[4-(4-methoxyphenyl)-1,3-thiazol-2-yl]prop-2-enenitrile
CAS 330179-72-1C21H18N2O3S
![N-[4-(2,3-Dihydro-1H-indol-1-ylsulfonyl)phenyl]benzamide chemical structure, C21H18N2O3S, CAS 327067-02-7](/s/ZFQMLZHRUQFNTI-UHFFFAOYSA-N.svg)
N-[4-(2,3-Dihydro-1H-indol-1-ylsulfonyl)phenyl]benzamide
CAS 327067-02-7C21H18N2O3S
- N-[2-[(2-Methyl-1H-indol-3-yl)sulfanyl]ethyl]-2-oxochromene-3-carboxamide687575-04-8C21H18N2O3S
- N-[1-Methyl-3-[2-(4-phenoxyphenoxy)-1,3-thiazol-5-yl]prop-2-ynyl]acetamide903886-81-7C21H18N2O3S
- (E)-3-(2,5-Dimethoxyphenyl)-2-(4-(4-methoxyphenyl)thiazol-2-yl)acrylonitrile332050-55-2C21H18N2O3S
- N-(6,7,8,9-Tetrahydrodibenzofuran-2-yl)quinoline-8-sulfonamide708226-85-1C21H18N2O3S
- 7-(4-Methoxyphenyl)-3-(2-phenoxyethyl)thieno[3,2-d]pyrimidin-4(3H)-one1105237-94-2C21H18N2O3S
- N-(Furan-2-ylmethyl)-N-(4-methylbenzo[d]thiazol-2-yl)-2-phenoxyacetamide922396-20-1C21H18N2O3S
- 4-(9-Acridinylamino)benzeneethanesulfonic acid64895-25-6C21H18N2O3S
- 3-Benzyl-7-(3,4-dimethoxyphenyl)-3H,4H-thieno[3,2-d]pyrimidin-4-one1105219-83-7C21H18N2O3S
- 2-[2-(2-Naphthalen-1-yloxyethylsulfanyl)benzimidazol-1-yl]acetic acid312929-77-4C21H18N2O3S
- N-Benzyl-N-(6-ethoxybenzo[d]thiazol-2-yl)furan-2-carboxamide899734-98-6C21H18N2O3S
- N-(3-Cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-2-(phenoxymethyl)furan-3-carboxamide878716-78-0C21H18N2O3S
- Ethyl 2-cinnamamido-4-phenylthiazole-5-carboxylate325738-24-7C21H18N2O3S
- N-(4-(Benzo[d][1,3]dioxol-5-yl)thiazol-2-yl)-5,6,7,8-tetrahydronaphthalene-2-carboxamide681170-67-2C21H18N2O3S
- 1-(Naphthalen-1-yl)-3-phenyltetrahydro-1H-thieno[3,4-d]imidazol-2(3H)-one 5,5-dioxide882356-70-9C21H18N2O3S
- 3-Phenyl-N-[(5Z)-6-(prop-2-yn-1-yl)-10,13-dioxa-4-thia-6-azatricyclo[7.4.0.0^{3,7}]trideca-1,3(7),8-trien-5-ylidene]propanamide905660-38-0C21H18N2O3S
- (Z)-2-(4-Ethylphenyl)-N-(7-(prop-2-yn-1-yl)-[1,3]dioxolo[4',5':4,5]benzo[1,2-d]thiazol-6(7H)-ylidene)acetamide1007057-50-2C21H18N2O3S
- 2-Methoxy-4-[7-(thiophen-2-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),4,10,12-tetraen-4-yl]phenol899985-01-4C21H18N2O3S
- 3-((2-Hydroxybenzyl)(p-tolyl)amino)benzo[d]isothiazole 1,1-dioxide433315-00-5C21H18N2O3S
- N-(3-Cyano-6-ethyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-2-oxo-2H-chromene-3-carboxamide353789-43-2C21H18N2O3S
- 7,11-Diphenyl-3-thioxo-2,4-diazaspiro[5.5]undecane-1,5,9-trione181520-02-5C21H18N2O3S
- N-(3,4-Dimethoxyphenyl)phenothiazine-10-carboxamide433238-55-2C21H18N2O3S
- N-(2-Methyl-4-nitrophenyl)-2-phenyl-2-(phenylsulfanyl)acetamide335397-76-7C21H18N2O3S
- N-(5-(4-Methylbenzyl)thiazol-2-yl)-1-oxoisochroman-3-carboxamide900898-11-5C21H18N2O3S
- N-(5-(3-Methylbenzyl)thiazol-2-yl)-1-oxoisochroman-3-carboxamide880415-96-3C21H18N2O3S
- 2-[10-Methoxy-7-(thiophen-2-yl)-8-oxa-5,6-diazatricyclo[7.4.0.0^{2,6}]trideca-1(9),4,10,12-tetraen-4-yl]phenol896621-93-5C21H18N2O3S
- 7-[(2-Ethyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4-yl)oxy]-2H-chromen-2-one315694-43-0C21H18N2O3S
- 4H,5H-(1)Benzothiopyrano(4,3-b)pyran-3-carbonitrile, 2-amino-4-(3,4-dimethoxyphenyl)-115091-78-6C21H18N2O3S
- (E)-2,6-Dimethoxy-N-(3-methylnaphtho[2,1-d]thiazol-2(3H)-ylidene)benzamide441290-89-7C21H18N2O3S
- (E)-2,4-Dimethoxy-N-(3-methylnaphtho[2,1-d]thiazol-2(3H)-ylidene)benzamide441290-80-8C21H18N2O3S
- (E)-3,4-Dimethoxy-N-(3-methylnaphtho[2,1-d]thiazol-2(3H)-ylidene)benzamide441290-86-4C21H18N2O3S
- (E)-3-(3,4-Dimethoxyphenyl)-1-(2-prop-2-ynylsulfanylbenzimidazol-1-yl)prop-2-en-1-one324779-91-1C21H18N2O3S
- (E)-N-(2,6-Dimethyl-4-oxocyclohexa-2,5-dien-1-ylidene)-N'-(phenylsulfonyl)benzimidamide408346-25-8C21H18N2O3S
- (5-(2-Hydroxyphenyl)-3-(3-methoxyphenyl)-4,5-dihydro-1H-pyrazol-1-yl)(thiophen-2-yl)methanone871319-12-9C21H18N2O3S
- N-[3-[[(E)-3-(4-Methoxyphenyl)prop-2-enoyl]amino]phenyl]thiophene-2-carboxamide586340-57-0C21H18N2O3S
- (E)-3-Methoxy-N-(4-methoxy-3-methylbenzo[d]thiazol-2(3H)-ylidene)-2-naphthamide441291-35-6C21H18N2O3S
- 3,5-Dimethoxy-N-(3-methylbenzo[g][1,3]benzothiazol-2-ylidene)benzamide441290-82-0C21H18N2O3S
- (Z)-Methyl 2-cyano-2-(5-(4-methylbenzyl)-4-oxo-3-phenylthiazolidin-2-ylidene)acetate496773-77-4C21H18N2O3S
- (Z)-Ethyl 2-(5-benzyl-4-oxo-3-phenylthiazolidin-2-ylidene)-2-cyanoacetate488101-25-3C21H18N2O3S
- 1H-Indole-2-methanol, alpha-methyl-1-(phenylsulfonyl)-alpha-4-pyridinyl-40899-89-6C21H18N2O3S
- N-[(4-Acetylphenyl)carbamothioyl]-3-methoxynaphthalene-2-carboxamide429655-62-9C21H18N2O3S
- (2E)-3-(1,3-Benzodioxol-5-yl)-N-(5-ethyl-4-phenyl-1,3-thiazol-2-yl)prop-2-enamide606923-09-5C21H18N2O3S
- N-(4-Methyl-2-nitrophenyl)-2-phenyl-2-(phenylsulfanyl)acetamide545383-28-6C21H18N2O3S
- Morpholine, 4-((4,6-dihydro-6-oxo-7-phenylthieno(2,3-a)indolizin-9-yl)carbonyl)-141388-99-0C21H18N2O3S
- Azetidine, 1-((4,6-dihydro-6-oxo-7-phenylthieno(2,3-a)indolizin-9-yl)carbonyl)-3-methoxy-141389-00-6C21H18N2O3S
- N-(4-(4-Benzylphenyl)thiazol-2-yl)-5,6-dihydro-1,4-dioxine-2-carboxamide864938-37-4C21H18N2O3S
- (2E)-2-(4-Phenyl-1,3-thiazol-2-yl)-3-(2,4,5-trimethoxyphenyl)prop-2-enenitrile380327-90-2C21H18N2O3S
- 2-(3-Phenyl-1-(phenylsulfonyl)-4,5-dihydro-1H-pyrazol-5-yl)phenol868214-18-0C21H18N2O3S
- (E)-N-Methyl-N-(phenyl((phenylsulfonyl)imino)methyl)benzamide82719-86-6C21H18N2O3S
- N-((5-(Benzofuran-2-yl)isoxazol-3-yl)methyl)-2-(benzylthio)acetamide1105242-70-3C21H18N2O3S
- N-(2-Oxotetrahydrothiophen-3-yl)-4-(quinolin-2-ylmethoxy)benzamide1203038-34-9C21H18N2O3S
- (Z)-2-Methoxy-N-(2-(3-(thiophen-2-yl)acrylamido)phenyl)benzamide1203431-37-1C21H18N2O3S
- 1-(4-Methoxybenzyl)-3-(3-methylphenyl)thieno[3,2-d]pyrimidine-2,4(1H,3H)-dione1326905-07-0C21H18N2O3S
- 2'-((4,5,6,7-Tetrahydrobenzo[d]thiazol-2-yl)carbamoyl)-[1,1'-biphenyl]-2-carboxylic acid2034390-90-2C21H18N2O3S
- Ethyl 4-{[(naphthalen-1-ylcarbonyl)carbamothioyl]amino}benzoate428852-97-5C21H18N2O3S
- Methyl 2-({7-methyl-2-phenyl-5H-chromeno[2,3-D]pyrimidin-4-YL}sulfanyl)acetate866340-61-6C21H18N2O3S
- Methyl 2-({9-methyl-2-phenyl-5H-chromeno[2,3-D]pyrimidin-4-YL}sulfanyl)acetate866871-00-3C21H18N2O3S
- 4-Methoxy-N-[(4-phenoxyphenyl)carbamothioyl]benzamide501105-42-6C21H18N2O3S
- N-{1-[(3-Acetylphenyl)amino]-2-oxo-2-(thiophen-2-yl)ethyl}benzamide433323-64-9C21H18N2O3S
- Benzenesulfonamide, N-(7-methoxy-4-acridinyl)-4-methyl-400768-91-4C21H18N2O3S
- (E)-N,N-Dibenzyl-3-(5-nitrothiophen-2-yl)acrylamide1321950-48-4C21H18N2O3S
- N-Benzyl-N-(4-ethoxybenzo[d]thiazol-2-yl)furan-2-carboxamide900004-58-2C21H18N2O3S
- 2-(2-(Furan-2-yl)-4-oxo-3,4-dihydrobenzo[b][1,4]thiazepin-5(2H)-yl)-N-phenylacetamide863004-75-5C21H18N2O3S
- 7-Methoxy-N-(pyridin-2-ylmethyl)-N-(thiophen-3-ylmethyl)benzofuran-2-carboxamide1235097-72-9C21H18N2O3S
- N-((1-Methyl-1H-pyrrol-2-yl)methyl)-2-oxo-N-(thiophen-2-ylmethyl)-2H-chromene-3-carboxamide1251614-87-5C21H18N2O3S
- (E)-N-(2-(Furan-2-carbonyl)-1,2,3,4-tetrahydroisoquinolin-7-yl)-3-(thiophen-2-yl)acrylamide1331575-55-3C21H18N2O3S
- (E)-3-(Furan-2-yl)-N-(2-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroisoquinolin-7-yl)acrylamide1331523-15-9C21H18N2O3S
- (E)-3-(Benzo[d][1,3]dioxol-5-yl)-N-(pyridin-2-ylmethyl)-N-(thiophen-3-ylmethyl)acrylamide1286744-36-2C21H18N2O3S
- N-(Furan-2-ylmethyl)-N-(pyridin-2-ylmethyl)naphthalene-1-sulfonamide1351599-76-2C21H18N2O3S
- 1-(4-((5-(Pyridin-4-yl)indolin-1-yl)sulfonyl)phenyl)ethanone2034523-76-5C21H18N2O3S
- 4-Acetyl-N-(4-ethoxy-3-prop-2-ynyl-1,3-benzothiazol-2-ylidene)benzamide868377-55-3C21H18N2O3S
- 3-[2-(4-Propoxyanilino)-1,3-thiazol-4-yl]chromen-2-one431908-34-8C21H18N2O3S
- 3,5-Dimethoxy-N-(1-methylbenzo[e][1,3]benzothiazol-2-ylidene)benzamide477499-73-3C21H18N2O3S
- N-(6-Ethoxy-1,3-benzothiazol-2-yl)-3-methoxynaphthalene-2-carboxamide313226-56-1C21H18N2O3S
- 3,4-Dimethoxy-N-(1-methylbenzo[e][1,3]benzothiazol-2-ylidene)benzamide477500-41-7C21H18N2O3S
- Benzenesulfonamide, 4-amino-N-(4-(3-oxo-3-phenyl-1-propenyl)phenyl)-, hydrate38924-72-0C21H18N2O3S
- Ethyl 4-cyano-3-methyl-5-[2-(naphthalen-1-yl)acetamido]thiophene-2-carboxylate896323-45-8C21H18N2O3S
Frequently asked questions
What is the molar mass of C21H18N2O3S?
The molar mass of C21H18N2O3S is 378.45 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 2 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 378.1038 Da.
How many compounds have the formula C21H18N2O3S?
CompoundList lists 140 compounds with the molecular formula C21H18N2O3S, including 2,6-Dimethoxy-4-(5-phenyl-4-(thiophen-2-yl)-1H-imidazol-2-yl)phenol, 4-(3,5-Diphenyl-4,5-dihydro-pyrazol-1-yl)-benzenesulfonic acid, [3-(2-Hydroxyphenyl)-5-(4-methoxyphenyl)-3,4-dihydropyrazol-2-yl]-thiophen-2-ylmethanone. 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 C21H18N2O3S?
C21H18N2O3S 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.