Molecular formula
C18H21ClN4O
85 compounds have this formula on CompoundList.
- Molar mass
- 344.84g/mol
- Monoisotopic mass
- 344.1404Da
- Atoms
- 45
- Elements
- 5
- Rings plus double bonds
- 10
The formula C18H21ClN4O describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 chlorine atom, 4 nitrogen atoms and 1 oxygen 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 × 1862.69%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 216.14%1.008 × 21 = 21.168 g/mol
- Cl Chlorine × 110.28%35.45 × 1 = 35.450 g/mol
- N Nitrogen × 416.25%14.007 × 4 = 56.028 g/mol
- O Oxygen × 14.64%15.999 × 1 = 15.999 g/mol
Look up another formula
Compounds with the formula C18H21ClN4O
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 85 of 85 compounds
N-(3-Chloro-4-methylphenyl)-2-(4-(2-pyridinyl)-1-piperazinyl)acetamide
CAS 477333-98-5C18H21ClN4O
N-(2-(4-(4-Chlorophenyl)piperazin-1-yl)ethyl)isonicotinamide
CAS 1208641-10-4C18H21ClN4O
(2-((2-Amino-4-chlorophenyl)amino)phenyl)(4-methyl-1-piperazinyl)methanone
CAS 65514-71-8C18H21ClN4O
![2-{[4-(3-Chlorophenyl)piperazin-1-yl]methyl}-2,5,6,7-tetrahydro-3H-cyclopenta[c]pyridazin-3-one chemical structure, C18H21ClN4O, CAS 1374537-81-1](/s/QIYKVMMUABWRSO-UHFFFAOYSA-N.svg)
2-{[4-(3-Chlorophenyl)piperazin-1-yl]methyl}-2,5,6,7-tetrahydro-3H-cyclopenta[c]pyridazin-3-one
CAS 1374537-81-1C18H21ClN4O
![N-{(1E)-1-(2-Chlorophenyl)-3-[4-(pyridin-2-yl)piperazin-1-yl]propylidene}hydroxylamine chemical structure, C18H21ClN4O, CAS 909413-62-3](/s/KBMINQNYZIHTHF-HEHNFIMWSA-N.svg)
N-{(1E)-1-(2-Chlorophenyl)-3-[4-(pyridin-2-yl)piperazin-1-yl]propylidene}hydroxylamine
CAS 909413-62-3C18H21ClN4O
![2-Chloro-N-[4-(4-ethylpiperazin-1-yl)phenyl]pyridine-3-carboxamide chemical structure, C18H21ClN4O, CAS 722464-41-7](/s/QPMQPXRLVJTDPD-UHFFFAOYSA-N.svg)
2-Chloro-N-[4-(4-ethylpiperazin-1-yl)phenyl]pyridine-3-carboxamide
CAS 722464-41-7C18H21ClN4O
![N-[3-Chloro-2-(4-ethylpiperazin-1-yl)phenyl]pyridine-3-carboxamide chemical structure, C18H21ClN4O, CAS 712284-48-5](/s/WAPJGIIXPDNIQG-UHFFFAOYSA-N.svg)
N-[3-Chloro-2-(4-ethylpiperazin-1-yl)phenyl]pyridine-3-carboxamide
CAS 712284-48-5C18H21ClN4O
![N-[(4-Chlorophenyl)methyl]-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide chemical structure, C18H21ClN4O, CAS 885439-59-8](/s/OYWAMDFSTXINCU-UHFFFAOYSA-N.svg)
N-[(4-Chlorophenyl)methyl]-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide
CAS 885439-59-8C18H21ClN4O
N-(3-Chloro-2-methylphenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide
CAS 847839-54-7C18H21ClN4O
![N-[2-Amino-4-(4-methylpiperazino)phenyl]-3-chlorobenzenecarboxamide chemical structure, C18H21ClN4O, CAS 439107-46-7](/s/FNLHWLHIFJNTQU-UHFFFAOYSA-N.svg)
N-[2-Amino-4-(4-methylpiperazino)phenyl]-3-chlorobenzenecarboxamide
CAS 439107-46-7C18H21ClN4O
![2-Chloro-N-{2-[4-(2-pyridinyl)-1-piperazinyl]ethyl}benzamide chemical structure, C18H21ClN4O, CAS 942033-93-4](/s/ZPEPDHBFLPVHDA-UHFFFAOYSA-N.svg)
2-Chloro-N-{2-[4-(2-pyridinyl)-1-piperazinyl]ethyl}benzamide
CAS 942033-93-4C18H21ClN4O
2-(2-Chlorophenyl)-N-((1-(pyrazin-2-yl)piperidin-4-yl)methyl)acetamide
CAS 1396766-34-9C18H21ClN4O
![2-Chloro-N-{[4-methyl-6-(piperidin-1-yl)pyrimidin-2-yl]methyl}benzamide chemical structure, C18H21ClN4O, CAS 1797291-82-7](/s/SHFUIWBGDRKMEP-UHFFFAOYSA-N.svg)
2-Chloro-N-{[4-methyl-6-(piperidin-1-yl)pyrimidin-2-yl]methyl}benzamide
CAS 1797291-82-7C18H21ClN4O
![2-(4-Chlorophenyl)-N-{[4-(piperidin-1-yl)pyrimidin-2-yl]methyl}acetamide chemical structure, C18H21ClN4O, CAS 1796962-88-3](/s/XBLWOTCIZHHSGP-UHFFFAOYSA-N.svg)
2-(4-Chlorophenyl)-N-{[4-(piperidin-1-yl)pyrimidin-2-yl]methyl}acetamide
CAS 1796962-88-3C18H21ClN4O
![2-(4-Chlorophenyl)-N-{[2-(piperidin-1-yl)pyrimidin-4-yl]methyl}acetamide chemical structure, C18H21ClN4O, CAS 1797330-90-5](/s/HICKIZGKEVYXBW-UHFFFAOYSA-N.svg)
2-(4-Chlorophenyl)-N-{[2-(piperidin-1-yl)pyrimidin-4-yl]methyl}acetamide
CAS 1797330-90-5C18H21ClN4O
1-(2-Chlorophenyl)-3-(2-(3,5-dicyclopropyl-1H-pyrazol-1-yl)ethyl)urea
CAS 1798028-56-4C18H21ClN4O
1-(2-Chlorophenyl)-3-((1-(pyridin-4-yl)piperidin-4-yl)methyl)urea
CAS 2034587-47-6C18H21ClN4O
![(4-(4-Chlorophenyl)piperazin-1-yl)(4,5,6,7-tetrahydro-1H-benzo[d]imidazol-5-yl)methanone chemical structure, C18H21ClN4O, CAS 2034451-01-7](/s/LTHIDGVGALNVOZ-UHFFFAOYSA-N.svg)
(4-(4-Chlorophenyl)piperazin-1-yl)(4,5,6,7-tetrahydro-1H-benzo[d]imidazol-5-yl)methanone
CAS 2034451-01-7C18H21ClN4O
(3-((1H-1,2,4-Triazol-1-yl)methyl)azetidin-1-yl)(1-(4-chlorophenyl)cyclopentyl)methanone
CAS 2320504-16-1C18H21ClN4O
![N-(5-Chloropyridin-2-yl)-2-[4-(2-methylphenyl)piperazin-1-yl]acetamide chemical structure, C18H21ClN4O, CAS 902646-29-1](/s/SIAGBVGMVMVWLN-UHFFFAOYSA-N.svg)
N-(5-Chloropyridin-2-yl)-2-[4-(2-methylphenyl)piperazin-1-yl]acetamide
CAS 902646-29-1C18H21ClN4O
1-(2-Chlorophenyl)-3-((1-(pyridin-2-yl)piperidin-4-yl)methyl)urea
CAS 1234805-42-5C18H21ClN4O
![2-(2-Chlorophenyl)-N-{[1-(pyrimidin-2-yl)piperidin-4-yl]methyl}acetamide chemical structure, C18H21ClN4O, CAS 1286713-72-1](/s/DSYNUNIILYJKDB-UHFFFAOYSA-N.svg)
2-(2-Chlorophenyl)-N-{[1-(pyrimidin-2-yl)piperidin-4-yl]methyl}acetamide
CAS 1286713-72-1C18H21ClN4O
(E)-1-(4-(2-(1H-Pyrazol-1-yl)ethyl)piperazin-1-yl)-3-(2-chlorophenyl)prop-2-en-1-one
CAS 1334377-05-7C18H21ClN4O
N-(3-Chloro-2-methylphenyl)-1-(6-methylpyridazin-3-yl)piperidine-4-carboxamide
CAS 1421477-61-3C18H21ClN4O
- (3-(1H-1,2,3-Triazol-1-yl)pyrrolidin-1-yl)(1-(4-chlorophenyl)cyclopentyl)methanone1795297-41-4C18H21ClN4O
- (3-(2H-1,2,3-Triazol-2-yl)pyrrolidin-1-yl)(1-(4-chlorophenyl)cyclopentyl)methanone2034346-49-9C18H21ClN4O
- 6H-Pyrrolo(2,3-d)pyrimidin-6-one, 5,7-dihydro-7-methyl-2-(4-phenyl-1-piperidinyl)-, monohydrochloride122113-20-6C18H21ClN4O
- N-(5-Chloro-2-methylphenyl)-4-(pyridin-2-ylmethyl)piperazine-1-carboxamide908559-00-2C18H21ClN4O
- N-{[6-(Azepan-1-yl)pyridin-3-yl]methyl}-2-chloropyridine-4-carboxamide1223716-33-3C18H21ClN4O
- 2-Chloro-N-{2-[(1-methylpiperidin-4-yl)amino]phenyl}pyridine-4-carboxamide1333570-16-3C18H21ClN4O
- N-(2-Chlorobenzyl)-1-(6-methylpyridazin-3-yl)piperidine-3-carboxamide1421444-62-3C18H21ClN4O
- 2-(4-Chlorophenyl)-N-[4,6-dimethyl-2-(pyrrolidin-1-yl)pyrimidin-5-yl]acetamide1448132-91-9C18H21ClN4O
- 2-(4-Chlorophenyl)-N-{[4-methyl-6-(pyrrolidin-1-yl)pyrimidin-2-yl]methyl}acetamide1796963-09-1C18H21ClN4O
- 6-Chloro-N-[2-[(1-methylpiperidin-4-yl)amino]phenyl]pyridine-2-carboxamide1436229-46-7C18H21ClN4O
- 2-Chloro-N-{[6-methyl-2-(piperidin-1-yl)pyrimidin-4-yl]methyl}benzamide1797619-91-0C18H21ClN4O
- 3-Chloro-N-{[6-methyl-2-(piperidin-1-yl)pyrimidin-4-yl]methyl}benzamide1797813-16-1C18H21ClN4O
- N-[(2-Chlorophenyl)-cyanomethyl]-2-methyl-3-(1,3,5-trimethylpyrazol-4-yl)propanamide1465408-96-1C18H21ClN4O
- 1-(3-Chlorophenyl)-3-{[1-(pyridin-3-yl)piperidin-4-yl]methyl}urea2034379-60-5C18H21ClN4O
- 1-((1R,5S)-3-(2H-1,2,3-Triazol-2-yl)-8-azabicyclo[3.2.1]octan-8-yl)-3-(3-chlorophenyl)propan-1-one2108287-89-2C18H21ClN4O
- 3-(3-Chlorophenyl)-1-(3-(4-cyclopropyl-1H-1,2,3-triazol-1-yl)pyrrolidin-1-yl)propan-1-one2034553-67-6C18H21ClN4O
- 3-{[1-(3-Chloropyridin-4-yl)piperidin-4-yl]methyl}-6-cyclopropyl-3,4-dihydropyrimidin-4-one2202460-81-7C18H21ClN4O
- 3-(3-Chlorophenyl)-1-[3-(1H-1,2,4-triazol-1-yl)-8-azabicyclo[3.2.1]octan-8-yl]propan-1-one2320377-65-7C18H21ClN4O
- 4-{[1-(3-Chloropyridin-4-yl)piperidin-4-yl]methoxy}-6-cyclopropylpyrimidine2309214-22-8C18H21ClN4O
- (1R,5S)-N-(4-Chlorobenzyl)-3-(1H-pyrazol-1-yl)-8-azabicyclo[3.2.1]octane-8-carboxamide2310152-85-1C18H21ClN4O
- 2-[4-(3-Chlorophenyl)piperazin-1-yl]-5,6,7,8-tetrahydro-3H-quinazolin-4-one942664-08-6C18H21ClN4O
- 4-Chloro-2-(4-cyclopentanecarbonylpiperazin-1-yl)quinazoline2241139-94-4C18H21ClN4O
- 1 suppliers1-{1-[(Pyridin-2-yl)methyl]piperidin-4-yl}-2,3-dihydro-1H-1,3-benzodiazol-2-one hydrochloride2138571-28-3C18H21ClN4O
- 1-(3-Chlorophenyl)-3-[4-(4-methylpiperazin-1-yl)phenyl]urea923777-26-8C18H21ClN4O
- 2-Chloro-N-[1-(5-cyclopropyl-1H-pyrazol-3-yl)piperidin-4-yl]benzamide1902909-47-0C18H21ClN4O
- N-(4-Chlorobenzyl)-1-(6-methylpyridazin-3-yl)piperidine-3-carboxamide2192746-07-7C18H21ClN4O
- 2-{[1-(3-Chloropyridin-4-yl)piperidin-4-yl]methyl}-6-cyclopropyl-2,3-dihydropyridazin-3-one2097929-12-7C18H21ClN4O
- 3-(3-Chlorophenyl)-1-[3-(1H-1,2,3-triazol-1-yl)-8-azabicyclo[3.2.1]octan-8-yl]propan-1-one2195951-86-9C18H21ClN4O
- 2-(2-Chlorophenyl)-N-[2-(dimethylamino)-5,6,7,8-tetrahydroquinazolin-6-yl]acetamide2097919-10-1C18H21ClN4O
- 2-{[1-(3-Chloropyridin-4-yl)piperidin-4-yl]methyl}-2H,3H,5H,6H,7H-cyclopenta[c]pyridazin-3-one2097866-69-6C18H21ClN4O
- N-(3-Chloro-4-cyanophenyl)-2-[(1-methylpiperidin-4-yl)(prop-2-yn-1-yl)amino]acetamide2248873-10-9C18H21ClN4O
- 3-Chloro-4-[(1-{5H,6H,7H-cyclopenta[d]pyrimidin-4-yl}piperidin-4-yl)methoxy]pyridine2640975-09-1C18H21ClN4O
- 4-(4-{[(3-Chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-6-cyclopropylpyrimidine2549042-33-1C18H21ClN4O
- 4-(4-{[(3-Chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-2-cyclopropylpyrimidine2548996-29-6C18H21ClN4O
- N-(2-Amino-1-naphthalen-2-ylethyl)-2,5-dimethylpyrazole-3-carboxamide, hydrochloride1835892-47-1C18H21ClN4O
- 1-Piperazineacetic acid, 4-methyl-, 2-(5-chloro-1-naphthylmethylene)hydrazide101975-76-2C18H21ClN4O
- 6-Chloro-2-[[4-[2-(1-pyrrolidinyl)ethyl]phenyl]amino]-3-pyridinecarboxamide1708122-09-1C18H21ClN4O
- N-(5-Chloro-2-methylphenyl)-1-(6-methylpyridazin-3-yl)piperidine-3-carboxamide2195878-41-0C18H21ClN4O
- N-(3-Chloro-2-methylphenyl)-1-(6-methylpyridazin-3-yl)piperidine-3-carboxamide2176069-38-6C18H21ClN4O
- N-(4-Chloro-2-methylphenyl)-1-(6-methylpyridazin-3-yl)piperidine-3-carboxamide2320383-22-8C18H21ClN4O
- 3-{[1-(3-Chloropyridin-4-yl)piperidin-4-yl]methoxy}-6-cyclopropylpyridazine2320534-99-2C18H21ClN4O
- 3-Chloro-4-[4-({5H,6H,7H-cyclopenta[c]pyridazin-3-yloxy}methyl)piperidin-1-yl]pyridine2320226-38-6C18H21ClN4O
- N-[1-(3-Chlorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine2415469-66-6C18H21ClN4O
- 2-Chloro-1-[4-(6-phenylpyridazin-3-yl)-1,4-diazepan-1-yl]propan-1-one2411296-65-4C18H21ClN4O
- N-[1-(2-Chlorobenzoyl)piperidin-4-yl]-N,6-dimethylpyrimidin-4-amine2415530-56-0C18H21ClN4O
- 4-(2-Chloropyrimidin-4-yl)-N-(2,5-dimethylphenyl)piperidine-1-carboxamide2411277-05-7C18H21ClN4O
- (2E)-N-[(3-Chloropyridin-4-yl)methyl]-4-(dimethylamino)-N-[(pyridin-4-yl)methyl]but-2-enamide2411330-16-8C18H21ClN4O
- 4-(2-Chloropyrimidin-4-yl)-N-(3-ethylphenyl)piperidine-1-carboxamide2411219-10-6C18H21ClN4O
- N-{2-[(E)-(2-Chlorophenyl)diazenyl]-5-(diethylamino)phenyl}acetamide105565-54-6C18H21ClN4O
- 2-[(1E)-3-Benzyl-3-methyltriaz-1-en-1-yl]-5-chloro-N-propylbenzamide646524-49-4C18H21ClN4O
- N-(3-Chlorophenyl)-4-[methyl(pyridin-2-yl)amino]piperidine-1-carboxamide2742080-15-3C18H21ClN4O
- N-[1-(2-Chlorobenzoyl)piperidin-3-yl]-N,5-dimethylpyrimidin-2-amine2640974-24-7C18H21ClN4O
- N-[1-(3-Chlorobenzoyl)piperidin-3-yl]-N,5-dimethylpyrimidin-2-amine2640898-83-3C18H21ClN4O
- 4-(6-Chloro-1,8-naphthyridin-2-yl)-[1,3'-bipiperidin]-2'-one2741894-56-2C18H21ClN4O
- 3-Chloro-2-[(1-{5H,6H,7H-cyclopenta[d]pyrimidin-4-yl}piperidin-3-yl)methoxy]pyridine2741896-37-5C18H21ClN4O
- 4-(3-{[(3-Chloropyridin-2-yl)oxy]methyl}piperidin-1-yl)-2-cyclopropylpyrimidine2742060-85-9C18H21ClN4O
- 3-(3-{[(3-Chloropyridin-2-yl)oxy]methyl}piperidin-1-yl)-6-cyclopropylpyridazine2770636-38-7C18H21ClN4O
- N-[1-(6-Chloroquinoxalin-2-yl)piperidin-4-yl]cyclobutanecarboxamide2770584-87-5C18H21ClN4O
- 2-(4-(4-(Aminomethyl)naphthalen-1-yl)-1H-pyrazol-1-yl)-N,N-dimethylacetamide hydrochloride3078446-41-7C18H21ClN4O
- 4-(6-Benzyl-2-chloro-5,6,7,8-tetrahydropyrido[4,3-D]pyrimidin-4-yl)morpholine1170226-53-5C18H21ClN4O
- (1E)-1-(2-Chlorophenyl)-3-[4-(2-pyridinyl)-1-piperazinyl]-1-propanone oximeC18H21ClN4O
Frequently asked questions
What is the molar mass of C18H21ClN4O?
The molar mass of C18H21ClN4O is 344.84 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 chlorine atom, 4 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 344.1404 Da.
How many compounds have the formula C18H21ClN4O?
CompoundList lists 85 compounds with the molecular formula C18H21ClN4O, including N-(3-Chloro-4-methylphenyl)-2-(4-(2-pyridinyl)-1-piperazinyl)acetamide, N-(2-(4-(4-Chlorophenyl)piperazin-1-yl)ethyl)isonicotinamide, (2-((2-Amino-4-chlorophenyl)amino)phenyl)(4-methyl-1-piperazinyl)methanone. 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 C18H21ClN4O?
C18H21ClN4O 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.