C21H38O2
40 compounds have this formula on CompoundList.
- Molar mass
- 322.53g/mol
- Monoisotopic mass
- 322.2872Da
- Atoms
- 61
- Elements
- 3
- Rings plus double bonds
- 3
The formula C21H38O2 describes a molecule made of 21 carbon atoms, 38 hydrogen atoms and 2 oxygen atoms. 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 × 2178.20%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 3811.88%1.008 × 38 = 38.304 g/mol
- O Oxygen × 29.92%15.999 × 2 = 31.998 g/mol
Compounds with the formula C21H38O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 40 of 40 compounds
![Methyl 8-[2-[(2-pentylcyclopropyl)methyl]cyclopropyl]octanoate chemical structure, C21H38O2, CAS 56687-67-3](/s/WSVAMWHCPDAWFM-UHFFFAOYSA-N.svg)
![Methyl 9-[2-[(2-butylcyclopropyl)methyl]cyclopropyl]nonanoate chemical structure, C21H38O2, CAS 10152-69-9](/s/NCGWEDSIWFSAMB-UHFFFAOYSA-N.svg)
![Methyl 3-[2-[(2-decylcyclopropyl)methyl]cyclopropyl]propanoate chemical structure, C21H38O2, CAS 10152-67-7](/s/UUEGGKLQKBHHGR-UHFFFAOYSA-N.svg)
![Methyl 4-[2-[(2-nonylcyclopropyl)methyl]cyclopropyl]butanoate chemical structure, C21H38O2, CAS 10152-68-8](/s/BEUIOIYFOPNKNN-UHFFFAOYSA-N.svg)
![2-[(Hexadec-11-yn-1-yl)oxy]oxane chemical structure, C21H38O2, CAS 73784-65-3](/s/QXJIYZDQFVIKOD-UHFFFAOYSA-N.svg)
- Octadecyl prop-2-ynoate4688-45-3C21H38O2
- 2-[(Hexadec-10-yn-1-yl)oxy]oxane88132-74-5C21H38O2
- (5S)-3-Hexadecyl-5-methylfuran-2(5H)-one71325-98-9C21H38O2
- 2-(9-Ethoxynonyl)-3-methyl-5-pentylfuran88646-99-5C21H38O2
- Methyl 10-ethenyloctadec-11-enoate136566-01-3C21H38O2
- Ethyl 2-(prop-1-EN-1-yl)hexadec-2-enoate195137-24-7C21H38O2
- (4S)-3,4,7-Trimethylocta-2,6-dien-1-yl decanoate501686-96-0C21H38O2
- Methyl 2-methylnonadeca-10,13-dienoate67132-38-1C21H38O2
- 2-[(Hexadec-8-yn-1-yl)oxy]oxane88109-66-4C21H38O2
- 2-[(Hexadec-6-yn-1-yl)oxy]oxane88109-64-2C21H38O2
- 2-[(Hexadec-4-yn-1-yl)oxy]oxane88109-63-1C21H38O2
- Propan-2-yl octadeca-12,15-dienoate918789-05-6C21H38O2
- 10,13-Eicosadienoic acid methyl ester30223-50-8C21H38O2
- Orb321469531327-64-7C21H38O2
- Henicos-20-ynoic acid122370-99-4C21H38O2
- Methyl (E)-10-ethenyloctadec-11-enoateC21H38O2
Frequently asked questions
What is the molar mass of C21H38O2?
The molar mass of C21H38O2 is 322.53 g/mol, calculated from standard atomic weights for 21 carbon atoms, 38 hydrogen atoms and 2 oxygen atoms. The monoisotopic mass is 322.2872 Da.
How many compounds have the formula C21H38O2?
CompoundList lists 40 compounds with the molecular formula C21H38O2, including Cis-11,14-eicosadienoic acid methyl ester, 11,14-Eicosadienoic acid, methyl ester, (12Z,15Z)-Henicosa-12,15-dienoic acid. 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 C21H38O2?
C21H38O2 has a degree of unsaturation of 3. 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.