DISCOVER THE ACID FAMILY
Browse carboxylic acids by structure, family, formula, properties, and use.
1 CARBOXYL GROUP · 7 CARBONS
COOH defines ring position 1 and OH occupies position 3. There is one carboxyl group, not two; the phenolic proton is a separate acid-base site. The neutral structure is achiral.
1 CARBOXYL GROUP · 7 CARBONS
OH and COOH occupy opposite ring positions, 1 and 4. The phenolic hydroxyl does not make this a dicarboxylic acid, and the molecule has no stereocenter.
1 CARBOXYL GROUP · 2 CARBONS
A two-carbon monocarboxylic acid; glacial and diluted products differ.
1 CARBOXYL GROUP · 3 CARBONS
The terminal CH₂=CH group is attached to COOH. Because one alkene carbon carries two hydrogens, acrylic acid does not have an E/Z pair.
2 CARBOXYL GROUPS · 6 CARBONS
Four methylene groups between two carboxyl groups.
2 CARBOXYL GROUPS · 9 CARBONS
Seven CH₂ groups separate its two carboxyl groups. There is no alkene or stereocenter in the neutral free-acid identity.
1 CARBOXYL GROUP · 7 CARBONS
A carboxyl group attached directly to a benzene ring.
1 CARBOXYL GROUP · 4 CARBONS
A straight-chain four-carbon monocarboxylic acid.
1 CARBOXYL GROUP · 9 CARBONS
A CH=CH unit connects the phenyl ring to COOH. E describes the opposite-side arrangement of the higher-priority substituents across that double bond. This structure has no phenolic hydroxyl group.
3 CARBOXYL GROUPS · 6 CARBONS
Three carboxyl groups and one additional hydroxyl group.
1 CARBOXYL GROUP · 4 CARBONS
The carbon–carbon double bond lies between carbons 2 and 3. E geometry places the higher-priority carboxyl and methyl groups on opposite sides; the condensed drawing alone does not encode that geometry.
1 CARBOXYL GROUP · 10 CARBONS
Nine alkyl-chain carbons terminate in COOH. Capric acid is distinct from the eight-carbon caprylic acid and from caprate salts or esters.
1 CARBOXYL GROUP · 1 CARBON
The one-carbon carboxylic acid, H–COOH.
2 CARBOXYL GROUPS · 4 CARBONS
An E/trans double bond between the carboxyl-bearing carbons.
1 CARBOXYL GROUP · 7 CARBONS
OH groups occupy ring positions 3, 4 and 5. The neutral free acid is achiral; its formula excludes any crystal water. Three phenolic OH groups do not mean three COOH groups.
1 CARBOXYL GROUP · 6 CARBONS
Four CHOH centers carry the stereochemistry of this D identity. The terminal CH₂OH supplies the fifth non-carboxylic hydroxyl. A condensed formula does not encode the four configurations; the IUPAC name and InChI do.
2 CARBOXYL GROUPS · 5 CARBONS
Two terminal COOH groups flank a three-carbon methylene spacer. There is no additional hydroxyl group, carbon–carbon double bond or stereocenter in this free-acid identity.
1 CARBOXYL GROUP · 2 CARBONS
The hydroxyl-bearing carbon is CH₂, so it has no stereocenter. The non-carboxylic OH makes this a hydroxy acid; it does not add a second carboxyl group.
1 CARBOXYL GROUP · 7 CARBONS
Its six-carbon alkyl group ends in one carboxyl group. It is achiral and has no geometric double-bond isomer to specify.
1 CARBOXYL GROUP · 6 CARBONS
The structure is a five-carbon alkyl chain joined to COOH. It has neither an additional hydroxyl group nor a carbon–carbon double bond.
2 CARBOXYL GROUPS · 8 CARBONS
One ring carbon lies between the two COOH-bearing carbons along the shorter ring path. This positional arrangement differs from both neighboring ortho groups and opposite para groups; the neutral identity is achiral.
1 CARBOXYL GROUP · 3 CARBONS
A three-carbon alpha-hydroxy acid; L, D and DL forms matter.
1 CARBOXYL GROUP · 12 CARBONS
Ten methylenes lie between CH₃ and COOH. The chain is saturated and achiral, with no E/Z alkene identity.
1 CARBOXYL GROUP · 5 CARBONS
Two CH₂ groups separate the carboxyl carbon from the ketone carbon. This is a gamma-keto acid, not the adjacent alpha-keto arrangement of pyruvic acid; the neutral identity is achiral.
1 CARBOXYL GROUP · 18 CARBONS
A CH₂ group separates the two cis double bonds: C9=C10 and C12=C13. They are methylene-interrupted, not conjugated. Counting from the methyl end places the first double bond at n-6.
2 CARBOXYL GROUPS · 4 CARBONS
Two carboxyl groups lie on the same side of the carbon–carbon double bond. Fumaric acid places them on opposite sides. The same formula and molecular weight do not establish interchangeable identity.
2 CARBOXYL GROUPS · 4 CARBONS
A hydroxy diacid with one stereocenter; this profile uses DL identity.
2 CARBOXYL GROUPS · 3 CARBONS
One methylene group between two carboxyl groups.
1 CARBOXYL GROUP · 8 CARBONS
A phenyl-bearing alpha-hydroxy acid; this profile uses DL identity.
1 CARBOXYL GROUP · 4 CARBONS
A methyl group and COOH share one alkene carbon; the other is CH₂. The terminal double bond has no E/Z assignment. Methacrylic acid and E-crotonic acid have the same formula but different connectivity.
1 CARBOXYL GROUP · 14 CARBONS
Twelve CH₂ groups connect CH₃ to COOH. There is one acid group, no alkene and no stereocenter in the neutral molecule.
1 CARBOXYL GROUP · 9 CARBONS
The molecule contains eight alkyl-chain carbons and one carboxyl carbon. Nonanoate salts, including ammonium nonanoate, are separate products.
1 CARBOXYL GROUP · 8 CARBONS
One carboxyl group is joined to a seven-carbon alkyl chain. Caprylic acid is not capric acid: capric acid has ten carbons.
1 CARBOXYL GROUP · 18 CARBONS
Numbering from the carboxyl carbon places the double bond between C9 and C10. Z, or cis for this alkene, specifies the same-side higher-priority carbon chains. There is no stereocenter.
2 CARBOXYL GROUPS · 2 CARBONS
Two carboxyl carbons directly joined, without a methylene spacer.
1 CARBOXYL GROUP · 16 CARBONS
Fourteen methylenes connect CH₃ to COOH. C16:0 indicates 16 carbons and zero carbon–carbon double bonds. The neutral identity is achiral.
1 CARBOXYL GROUP · 5 CARBONS
One carboxyl group terminates a four-carbon alkyl chain. The carboxyl carbon brings the total to five; branched valeric-acid isomers are different compounds.
1 CARBOXYL GROUP · 8 CARBONS
The benzene ring makes this an aromatic-containing acid, but the carboxyl carbon is not attached directly to the ring. Its CH₂ side chain has no stereocenter.
2 CARBOXYL GROUPS · 8 CARBONS
Two neighboring ring carbons carry COOH groups. Their adjacent arrangement is positional isomerism, not a cis/trans alkene designation. The neutral acid is achiral.
2 CARBOXYL GROUPS · 7 CARBONS
Two carboxyl groups terminate a chain containing five CH₂ groups. The neutral free acid is achiral and has no carbon–carbon double bond.
1 CARBOXYL GROUP · 3 CARBONS
A straight-chain three-carbon monocarboxylic acid.
1 CARBOXYL GROUP · 3 CARBONS
A ketone carbonyl lies next to the carboxyl group. There is one COOH group and no stereocenter in the neutral molecular structure.
1 CARBOXYL GROUP · 7 CARBONS
An aromatic acid with a neighboring phenolic hydroxyl.
2 CARBOXYL GROUPS · 10 CARBONS
Eight methylene groups connect its two terminal carboxyl groups. Decanedioic acid is distinct from decanoic acid, which has only one carboxyl group.
1 CARBOXYL GROUP · 6 CARBONS
Two carbon–carbon double bonds alternate with a single bond. Both double bonds have E geometry. Potassium sorbate is a salt with a different formula, molecular weight and commercial specification.
1 CARBOXYL GROUP · 18 CARBONS
C18:0 has 18 carbons, no C=C bonds and one COOH group. The neutral molecular identity is achiral and differs from stearate salts.
2 CARBOXYL GROUPS · 8 CARBONS
Six methylene groups connect two terminal carboxyl groups. Octanedioic acid is the free acid; disuccinimidyl suberate is a chemically activated ester derivative.
2 CARBOXYL GROUPS · 4 CARBONS
A saturated four-carbon chain with two carboxyl groups.
2 CARBOXYL GROUPS · 4 CARBONS
A hydroxy diacid with two stereocenters; this profile uses L-(+).
2 CARBOXYL GROUPS · 8 CARBONS
The 1,4, or para, arrangement is a molecular-connectivity identity. It is distinct from 1,2 phthalic acid and 1,3 isophthalic acid despite sharing their formula and molecular weight.
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One carboxyl group, across aliphatic, aromatic and hydroxy examples.
Browse acids →Two carboxyl groups, with differences in chain length, substitution and unsaturation.
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