C18H21N3S
44 compounds have this formula on CompoundList.
- Molar mass
- 311.45g/mol
- Monoisotopic mass
- 311.1456Da
- Atoms
- 43
- Elements
- 4
- Rings plus double bonds
- 10
The formula C18H21N3S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen 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 × 1869.42%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.80%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 313.49%14.007 × 3 = 42.021 g/mol
- S Sulfur × 110.29%32.06 × 1 = 32.060 g/mol
Compounds with the formula C18H21N3S
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 44 of 44 compounds
![7-(Butylsulfanyl)-2,5-dimethyl-3-phenylpyrazolo[1,5-a]pyrimidine chemical structure, C18H21N3S, CAS 877805-67-9](/s/PJQPTXJJBZIJIG-UHFFFAOYSA-N.svg)
- 10H-Pyrido(3,2-b)(1,4)benzothiazine, 10-(2-(1-pyrrolidinyl)propyl)-67466-10-8C18H21N3S
- N-Benzyl-2-(pyridin-3-yl)piperidine-1-carbothioamide399002-70-1C18H21N3S
- 5-Benzyl-1-(2,4-dimethylphenyl)-1,3,5-triazinane-2-thione677731-46-3C18H21N3S
- 5-Benzyl-1-(2,5-dimethylphenyl)-1,3,5-triazinane-2-thione676539-32-5C18H21N3S
- 5-Benzyl-1-(2,3-dimethylphenyl)-1,3,5-triazinane-2-thione677730-35-7C18H21N3S
- 1-(2-Methylphenyl)-5-(2-phenylethyl)-1,3,5-triazinane-2-thione678151-63-8C18H21N3S
- 1-(3-Methylphenyl)-5-(2-phenylethyl)-1,3,5-triazinane-2-thione678181-72-1C18H21N3S
- 2-{[(1H-Benzimidazol-2-yl)sulfanyl]methyl}-N,N-diethylaniline104340-42-3C18H21N3S
- N-[2-(4,4-Dimethyl-3,4-dihydroquinolin-1(2H)-yl)phenyl]thiourea917898-57-8C18H21N3S
- (2S)-1-[4-Methyl-2-(3-phenylpropyl)-1,3-thiazol-5-yl]pyrrolidine-2-carbonitrile3007689-83-7C18H21N3S
- 4-Benzhydrylpiperazine-1-carbothioamide116541-70-9C18H21N3S
- N-[3-(1,3-Dihydro-2H-isoindol-2-yl)propyl]-N'-phenylthiourea16036-35-4C18H21N3S
- 3-Methyl-N,4-diphenylpiperazine-1-carbothioamide4318-46-1C18H21N3S
- 1-Benzyl-1-methyl-2-(pyridin-3-yl)pyrrolidin-1-ium thiocyanate5450-39-5C18H21N3S
- 3-[3-(Dimethylamino)phenyl]-2-ethyl-6-methylthieno[2,3-b]pyridin-4-amine1312594-28-7C18H21N3S
- 4-[2,5-Dimethyl-1-(4-methylphenyl)pyrrol-3-yl]-N,3-dimethyl-1,3-thiazol-2-imine1049983-66-5C18H21N3S
- 1H-1,2,4-Triazole, 4,5-dihydro-3-(methylthio)-1,4-diphenyl-5-propyl-56111-43-4C18H21N3S
- 1-((2-(Dimethylamino)ethyl)amino)-10-methylacridine-9(10H)-thione847789-67-7C18H21N3S
- N1-Dibenzo[b,f][1,4]thiazepin-11-yl-N1,N2,N2-trimethyl-1,2-ethanediamine5747-47-7C18H21N3S
- 1-[(2,4-Dimethyl-1,3-thiazol-5-yl)methyl]-4-phenylpiperidine-4-carbonitrile2640947-54-0C18H21N3S
Frequently asked questions
What is the molar mass of C18H21N3S?
The molar mass of C18H21N3S is 311.45 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 1 sulfur atom. The monoisotopic mass is 311.1456 Da.
How many compounds have the formula C18H21N3S?
CompoundList lists 44 compounds with the molecular formula C18H21N3S, including 4-(4-Methylphenyl)-N-phenyl-1-piperazinecarbothioamide, 2-(3,4-Dimethylphenyl)-5-ethyl-5-phenyl-1,2,4-triazolidine-3-thione, 4-Benzyl-N-phenylpiperazine-1-carbothioamide. 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 C18H21N3S?
C18H21N3S has a degree of unsaturation of 10. 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.