Molecular formula

C₁₈H₂₁ClN₄O₃S

38 compounds have this formula on CompoundList.

Molar mass: 408.90g/mol
Monoisotopic mass: 408.1023Da
Atoms: 48
Elements: 6
Rings plus double bonds: 10

The formula C18H21ClN4O3S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 1 chlorine atom, 4 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 × 1852.87%
12.011 × 18 = 216.198 g/mol
H Hydrogen × 215.18%
1.008 × 21 = 21.168 g/mol
Cl Chlorine × 18.67%
35.45 × 1 = 35.450 g/mol
N Nitrogen × 413.70%
14.007 × 4 = 56.028 g/mol
O Oxygen × 311.74%
15.999 × 3 = 47.997 g/mol
S Sulfur × 17.84%
32.06 × 1 = 32.060 g/mol

Look up another formula

Compounds with the formula C18H21ClN4O3S

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

Showing 1 to 38 of 38 compounds

4-Chloro-N-[3-oxo-3-(4-pyridin-2-yl-piperazin-1-yl)-propyl]-benzenesulfonamide

CAS 838875-97-1C₁₈H₂₁ClN₄O₃S

Butyl 4-[({[(4-chloro-1-ethyl-1H-pyrazol-5-yl)carbonyl]amino}carbothioyl)amino]benzoate

CAS 494218-37-0C₁₈H₂₁ClN₄O₃S

1-(3-Chlorophenyl)-3-[4-(4-methylsulfonylpiperazin-1-yl)phenyl]urea

CAS 714210-61-4C₁₈H₂₁ClN₄O₃S

Methyl (4-(2-(4-(5-chloro-2-methylphenyl)piperazin-1-yl)-2-oxoethyl)thiazol-2-yl)carbamate

CAS 946284-45-3C₁₈H₂₁ClN₄O₃S

Ethyl 4-(2-{2-[(3-chlorophenyl)amino]-1,3-thiazol-4-yl}acetyl)piperazine-1-carboxylate

CAS 1040657-00-8C₁₈H₂₁ClN₄O₃S

3-Chloro-N-(2-{[4-(pyridin-2-yl)piperazin-1-yl]sulfonyl}ethyl)benzamide

CAS 946201-13-4C₁₈H₂₁ClN₄O₃S

Ebov-IN-5

CAS 68207-15-8C₁₈H₂₁ClN₄O₃S

7-(2-Chlorobenzyl)-8-((2-ethoxyethyl)thio)-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione

CAS 442864-81-5C₁₈H₂₁ClN₄O₃S

8-[(3-Chloro-2-hydroxypropyl)sulfanyl]-3-methyl-7-(3-phenylpropyl)-3,7-dihydro-1H-purine-2,6-dione

CAS 370070-75-0C₁₈H₂₁ClN₄O₃S

N-[3'-Acetyl-5-chloro-1-(3-methylbutyl)-2-oxo-1,2-dihydro-3'H-spiro[indole-3,2'-[1,3,4]thiadiazole]-5'-yl]acetamide

CAS 951899-02-8C₁₈H₂₁ClN₄O₃S

4-Chloro-N-(4,6-dimethylpyrimidin-2-yl)-3-(piperidin-1-ylsulfonyl)benzamide

CAS 940999-61-1C₁₈H₂₁ClN₄O₃S

{4-[(4-Chlorophenyl)sulfonyl]piperazino}(4,5,6,7-tetrahydro-1H-indazol-3-yl)methanone

CAS 1435978-01-0C₁₈H₂₁ClN₄O₃S

N-(1-(8-Chloro-11-oxo-3,4-dihydro-1H-dipyrido[1,2-a:4',3'-d]pyrimidin-2(11H)-yl)-4-(methylthio)-1-oxobutan-2-yl)acetamide

CAS 2034201-99-3C₁₈H₂₁ClN₄O₃S

N'-[2-(4-Chlorophenyl)-4,6-dihydrothieno[3,4-c]pyrazol-3-yl]-N-(3-ethoxypropyl)oxamide

CAS 899969-96-1C₁₈H₂₁ClN₄O₃S

2-Chloro-N-(2-{[4-(pyridin-2-yl)piperazin-1-yl]sulfonyl}ethyl)benzamide

CAS 946201-09-8C₁₈H₂₁ClN₄O₃S

5-Chloro-2-methoxy-N-(2-(2-oxo-2-(propylamino)ethyl)-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)benzamide

CAS 1105203-22-2C₁₈H₂₁ClN₄O₃S

N-(Benzo[d]thiazol-2-yl)-N-(3-morpholinopropyl)isoxazole-5-carboxamide hydrochloride

CAS 1185070-01-2C₁₈H₂₁ClN₄O₃S

(E)-3-(2-Chlorophenyl)-1-(4-((1-methyl-1H-pyrazol-4-yl)sulfonyl)-1,4-diazepan-1-yl)prop-2-en-1-one

CAS 2035000-73-6C₁₈H₂₁ClN₄O₃S

N'-[2-(3-Chlorophenyl)-4,6-dihydrothieno[3,4-c]pyrazol-3-yl]-N-(3-ethoxypropyl)oxamide

CAS 900010-65-3C₁₈H₂₁ClN₄O₃S

N-(3-Chloro-4-methylphenyl)-2-((1-(2-(cyclopropylamino)-2-oxoethyl)-5-(hydroxymethyl)-1H-imidazol-2-yl)thio)acetamide

CAS 921568-42-5C₁₈H₂₁ClN₄O₃S

2-(2-Chlorophenyl)-N-(2-(2-((2-methoxyethyl)amino)-2-oxoethyl)-4,6-dihydro-2H-thieno[3,4-c]pyrazol-3-yl)acetamide

CAS 1105248-73-4C₁₈H₂₁ClN₄O₃S

N-(6-Methylbenzo[d]thiazol-2-yl)-N-(2-morpholinoethyl)isoxazole-5-carboxamide hydrochloride

CAS 1185068-68-1C₁₈H₂₁ClN₄O₃S

1-(2-Chloropyridin-3-yl)sulfonyl-N-(1-pyridin-3-ylethyl)piperidine-4-carboxamide

CAS 1197588-17-2C₁₈H₂₁ClN₄O₃S

2-((5-Chloro-1-(2-((2,5-dimethylphenyl)amino)-2-oxoethyl)-6-oxo-1,6-dihydropyridazin-4-yl)thio)-N-ethylacetamide

CAS 1286733-30-9C₁₈H₂₁ClN₄O₃S

Frequently asked questions

Still have a question?

The help centre explains buying, quotes and supplier badges step by step, or you can write to our team.

Help centre Contact us

What is the molar mass of C18H21ClN4O3S?

The molar mass of C18H21ClN4O3S is 408.90 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 1 chlorine atom, 4 nitrogen atoms, 3 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 408.1023 Da.

How many compounds have the formula C18H21ClN4O3S?

CompoundList lists 38 compounds with the molecular formula C18H21ClN4O3S, including 4-Chloro-N-[3-oxo-3-(4-pyridin-2-yl-piperazin-1-yl)-propyl]-benzenesulfonamide, Butyl 4-[({[(4-chloro-1-ethyl-1H-pyrazol-5-yl)carbonyl]amino}carbothioyl)amino]benzoate, 1-(3-Chlorophenyl)-3-[4-(4-methylsulfonylpiperazin-1-yl)phenyl]urea. 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 C18H21ClN4O3S?

C18H21ClN4O3S 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.