Molecular formula
C21H28O4
106 compounds have this formula on CompoundList.
- Molar mass
- 344.45g/mol
- Monoisotopic mass
- 353.2552Da
- Atoms
- 53
- Elements
- 3
- Rings plus double bonds
- 8
The formula C21H28O4 describes a molecule made of 21 carbon atoms, 28 hydrogen atoms and 4 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 × 2173.23%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 288.19%1.008 × 28 = 28.224 g/mol
- O Oxygen × 418.58%15.999 × 4 = 63.996 g/mol
Look up another formula
Compounds with the formula C21H28O4
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 106 compounds
11-Nor-9-carboxy-delta9-tetrahydrocannabinol
CAS 56354-06-4C21H28O4
11-Nor-delta(9)-tetrahydrocannabinol-9-carboxylic acid
CAS 64280-14-4C21H28O4
11-Dehydrocorticosterone
CAS 72-23-1C21H28O4
21-Deoxycortisone
CAS 1882-82-2C21H28O4
7-Oxodehydroepiandrosterone 3-acetate
CAS 1449-61-2C21H28O4
Bisphenol A bis(2-hydroxypropyl) ether
CAS 116-37-0C21H28O4
delta8-THC-11-oic acid
CAS 39690-06-7C21H28O4
Formebolone
CAS 2454-11-7C21H28O4
Anecortave
CAS 10184-70-0C21H28O4
delta'-Dehydrocortexolone
CAS 1807-14-3C21H28O4
4-Acetoxy-4-androstene-3,17-dione
CAS 61630-32-8C21H28O4
21-Hydroxy-3,20-dioxopregn-4-en-19-al
CAS 75220-37-0C21H28O4
![(6aS,10aS)-1-Hydroxy-6,6-dimethyl-3-pentyl-6a,7,8,10a-tetrahydrobenzo[c]chromene-9-carboxylic acid chemical structure, C21H28O4, CAS 114028-39-6](/s/YOVRGSHRZRJTLZ-HOTGVXAUSA-N.svg)
(6aS,10aS)-1-Hydroxy-6,6-dimethyl-3-pentyl-6a,7,8,10a-tetrahydrobenzo[c]chromene-9-carboxylic acid
CAS 114028-39-6C21H28O4
Ganomycin B
CAS 267418-83-7C21H28O4
11beta-Hydroxy-6alpha-methyl-3-oxoandrosta-1,4-diene-17beta-carboxylic acid
CAS 229019-44-7C21H28O4
(11beta)-11,18-Epoxy-21-hydroxypregn-4-ene-3,20-dione
CAS 2507-88-2C21H28O4
21-Deoxyaldosterone
CAS 47417-48-1C21H28O4
19-Norpregn-4-en-20-yn-3-one, 19-hydroperoxy-17-hydroxy-7-methyl-, (7alpha,17alpha)-
CAS 105186-34-3C21H28O4
Neridienone B
CAS 61671-56-5C21H28O4
![[(6R,8R,9S,10R,13S,14S)-10,13-Dimethyl-3,17-dioxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-6-yl] acetate chemical structure, C21H28O4, CAS 1816-83-7](/s/WGJULUODXUVWJZ-YBKKEEBTSA-N.svg)
[(6R,8R,9S,10R,13S,14S)-10,13-Dimethyl-3,17-dioxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-6-yl] acetate
CAS 1816-83-7C21H28O4
![[(6S,8R,9S,10R,13S,14S)-10,13-Dimethyl-3,17-dioxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-6-yl] acetate chemical structure, C21H28O4, CAS 1816-82-6](/s/WGJULUODXUVWJZ-ZYVPZICASA-N.svg)
[(6S,8R,9S,10R,13S,14S)-10,13-Dimethyl-3,17-dioxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-6-yl] acetate
CAS 1816-82-6C21H28O4
12-Methyl-5-dehydrohorminone
CAS 199986-66-8C21H28O4
(15alpha)-15-(Acetyloxy)androst-4-ene-3,17-dione
CAS 65429-29-0C21H28O4
(±)-11-Nor-9-carboxy-delta9-thc-D9
CAS 136765-52-1C21H28O4
- Avarone B130203-68-8C21H28O4
- (±)-11-Nor-9-tetrahydrocannabinol-[d3]136844-96-7C21H28O4
- Triptobenzene H146900-55-2C21H28O4
- Taiwaniaquinol D696646-79-4C21H28O4
- 3-[[(1S,4aS,8aS)-5,5,8a-Trimethyl-2-methylidene-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]methyl]-2,5-dihydroxycyclohexa-2,5-diene-1,4-dione191608-64-7C21H28O4
- Taiwaniaquinol A170384-71-1C21H28O4
- Hyperguinone B350028-04-5C21H28O4
- 4-Pregnene-3,20-dione-21-oic acid2681-57-4C21H28O4
- Stizophyllin109237-00-5C21H28O4
- (E,E)-Boviquinone 334198-83-9C21H28O4
- 1,3-Dibutoxy-7,8,9,10-tetrahydro-6H-benzo[c]chromen-6-one314744-65-5C21H28O4
- Crassumolide C81027-47-6C21H28O4
- Deprodone20423-99-8C21H28O4
- Methyl 15-hydroxy-7-oxodehydroabietate60188-95-6C21H28O4
- Taxusabietane A220785-02-4C21H28O4
- 1 suppliers7-Carboxycannabidiol63958-77-0C21H28O4
- Membranolide B732296-53-6C21H28O4
- 17-Acetyl-15-hydroxy-10,13-dimethyl-2,6,7,8,9,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthrene-3,11-dione855-05-0C21H28O4
- 3beta-Hydroxy-17-oxoandrost-5-en-19-al acetate2067-71-2C21H28O4
- 1 suppliersPregna-1,4-diene-3,20-dione, 11,21-dihydroxy-, (11beta)-13479-38-4C21H28O4
- Dendryphiellin C121661-41-4C21H28O4
- Triptonoditerpenic acid139953-20-1C21H28O4
- Trigonochinene B1053209-95-2C21H28O4
- 6a,7,8,10a-Tetrahydro-1-hydroxy-6,6-dimethyl-3-(pentyl-5,5,5-D3)-6H-dibenzo(b,D)pyran-9-carboxylic acid, (6aR,10aR)-130381-15-6C21H28O4
- delta9-TETRAHYDROCANNABINOLIC ACID-C460007-98-9C21H28O4
- 3-Hydroxy-16,21-epoxypregn-17-ene-11,21-dione337-67-7C21H28O4
- 11,20-Dihydroxy-3-oxopregna-4,17(20)-dien-21-al3247-38-9C21H28O4
- Trigonochinene A1053209-93-0C21H28O4
- (Isopropylidene)bis(1-methyl-1-phenylethyl) peroxide4202-02-2C21H28O4
- [Isopropylidenebis(p-phenyleneoxy)]dipropanol33393-97-4C21H28O4
- 17,21-Dihydroxypregna-4,6-diene-3,20-dione70081-51-5C21H28O4
- Anhydrohirundigenin20853-99-0C21H28O4
- Propionic acid, 2-methyl-2-((17-oxo-1,3,5(10)-estratrien-3-yl)oxy)-111825-43-5C21H28O4
- (±)-Cannabichromebutolic acid2552823-92-2C21H28O4
- Methyl dodonate A349534-70-9C21H28O4
- Gestodene impurity 1104933-97-3C21H28O4
- (11B,17E)-11,20-dihydroxy-3-oxo-pregna-4,17(20)-dien-21-al105562-12-7C21H28O4
- 16alpha,17-Epoxy-11alpha-hydroxypregn-4-ene-3,20-dione19427-36-2C21H28O4
- 6beta-Hydroxypregn-4-ene-3,11,20-trione28449-15-2C21H28O4
- 21-Dehydrocorticosterone (mixture of the aldehyde and the hydrated form)20287-97-2C21H28O4
- (11b,17Z)-11,20-Dihydroxy-3-oxo-pregna-4,17(20)-dien-21-al105562-13-8C21H28O4
- Methyl (1R,2R,5R,8R,9S,10S,11R)-11-methyl-6-methylidene-12-oxo-13-oxapentacyclo[9.3.3.15,8.01,10.02,8]octadecane-9-carboxylate13744-19-9C21H28O4
- 4-((2S,3S)-4-(3,4-Dimethoxyphenyl)-2,3-dimethylbutyl)-2-methoxyphenol174291-51-1C21H28O4
- 3-[(3-Ethenyloxiran-2-yl)methyl]-2-methyl-4-oxocyclopent-2-en-1-yl 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate131380-59-1C21H28O4
- (4beta,5beta,17beta)-3-Oxo-4,5-epoxyandrost-1-en-17-yl acetate13731-42-5C21H28O4
- (6aR,10aR)-6a,7,10,10a-Tetrahydro-1-hydroxy-6,6-dimethyl-3-(pentyl-4,4,5,5,5-d5)-6H-dibenzo(b,d)pyran-9-carboxylic acid949596-05-8C21H28O4
- 1 suppliers(-)-11-nor-9-Carboxy-Delta8-THC-d3949596-06-9C21H28O4
- 17-Beta,19-dihydroxyandrosta-1,4-dien-3-one 19-acetate101831-46-3C21H28O4
- 17-Acetyl-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,14,15,16-decahydrocyclopenta[a]phenanthrene-3,12-dione2484-48-2C21H28O4
- (8S,9S,10R,11R,13S,14S,17R)-17-Acetyl-11,17-dihydroxy-10,13-dimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-one905-52-2C21H28O4
- 12-Methylcarnosol85514-27-8C21H28O4
- (A+/-)-11-Nor-9-Carboxy-delta9-THC-D91435934-70-5C21H28O4
- 21-DehydrocorticosteroneC21H28O4
- Benzoic acid, 3-((((2-2,dimethyl-3-(2-methyl-1-propenyl)cyclopropyl)carbonyl)oxy)methyl)-, propyl ester, (1R-trans)-128347-63-7C21H28O4
- 4-[(Cyclohexylcarbonyl)oxy]-2-methylphenyl cyclohexanecarboxylate791840-57-8C21H28O4
- 1-Butan-2-yl-4-[2-[2-(4-methoxyphenoxy)ethoxy]ethoxy]benzene6437-94-1C21H28O4
- 3-Hexyl-4,8-dimethyl-7-((3-oxobutan-2-yl)oxy)-2H-chromen-2-one374764-43-9C21H28O4
- (2E)-2-(3-Hydroxy-10,13-dimethyl-17-oxo-2,3,4,7,8,9,11,12,14,15-decahydro-1H-cyclopenta[a]phenanthren-16-ylidene)acetic acid81371-61-1C21H28O4
- (9-Cis,13-cis)-12-carboxy retinoic acid99394-38-4C21H28O4
- Benzene, 5-[2-(3,5-dimethoxyphenyl)ethyl]-1,3-dimethoxy-2-propyl-847992-74-9C21H28O4
- 6beta,17-Dihydroxy-pregna-1,4-diene-3,20-dione95042-81-2C21H28O4
- Cbdba2413020-50-3C21H28O4
- Delta8-THCBA-A (exempt preparation)2022178-63-6C21H28O4
- 2,2'-Methylenebis(5-tert-butylbenzene-1,4-diol)54636-99-6C21H28O4
- (6aR,12aR,12bS)-1,3,4,4a,5,6,6a,12,12a,12b-Decahydro-10-hydroxy-4,4,6a,12b-tetramethyl-2H-benzo[a]xanthene-8,11-dione1258005-85-4C21H28O4
- Hydrocortisone impurity 723103-16-0C21H28O4
- (4R,6R)-6-[(2R)-1-(3,4-Dimethoxyphenyl)propan-2-yl]-4-methoxy-6-(prop-2-en-1-yl)cyclohex-2-en-1-one117505-92-7C21H28O4
- 3-(Methoxymethoxy)estra-1(10),2,4-trien-17beta-yl formate113680-56-1C21H28O4
- 16a,17-Epoxy-11b-hydroxypregn-4-ene-3,20-dione3684-83-1C21H28O4
- 12-Carboxyretinoic acid6703-19-1C21H28O4
- (E,4E)-3-Methyl-4-[(2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohexen-1-yl)penta-2,4-dienylidene]pent-2-enedioic acidC21H28O4
- (E)-6-(3,7-Dimethylocta-2,6-dien-1-yl)-5,7-dimethoxy-4-methylisobenzofuran-1(3H)-one207398-37-6C21H28O4
- 5-[(6aR,10aR)-1-Hydroxy-6,6,9-trimethyl-6a,7,8,10a-tetrahydrobenzo[c]chromen-3-yl]pentanoic acid74333-70-3C21H28O4
- 7-Dodecanoyl-4-hydroxy-2H-1-benzopyran-2-one88331-60-6C21H28O4
- (4Z,4aR,7R,8aR)-4-Ethylidene-3,4,4a,7,8,8a-hexahydro-8-methylene-5-(1-methylethyl)-3-oxo-1H-2-benzopyran-7-yl (2E)-3-methyl-2-pentenoate189389-03-5C21H28O4
- Alpha-cyclohexyl-3-methyl-5-[(tetrahydro-2H-pyran-4-yl)oxy]-2-benzofuranmethanol1186541-14-9C21H28O4
Frequently asked questions
What is the molar mass of C21H28O4?
The molar mass of C21H28O4 is 344.45 g/mol, calculated from standard atomic weights for 21 carbon atoms, 28 hydrogen atoms and 4 oxygen atoms. The monoisotopic mass is 353.2552 Da.
How many compounds have the formula C21H28O4?
CompoundList lists 106 compounds with the molecular formula C21H28O4, including 11-Nor-9-carboxy-delta9-tetrahydrocannabinol, 11-Nor-delta(9)-tetrahydrocannabinol-9-carboxylic acid, 11-Dehydrocorticosterone. 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 C21H28O4?
C21H28O4 has a degree of unsaturation of 8. 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.