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Formula of Alizarin (C14H8O4)

Identification of Alizarin Chemical Compound

2D chemical structure image of Alizarin
Chemical Formula C14H8O4
Molecular Weight 240.21092 g/mol
IUPAC Name 1,2-dihydroxy-9,10-dihydroanthracene-9,10-dione
SMILES String Oc3ccc2C(=O)c1ccccc1C(=O)c2c3O
InChI InChI=1S/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18H
InChIKey RGCKGOZRHPZPFP-UHFFFAOYSA-N

Chemical Formula Description

The Alizarin molecule contains a total of 26 atom(s). There are 8 Hydrogen atom(s), 14 Carbon atom(s), and 4 Oxygen atom(s). A chemical formula of Alizarin can therefore be written as:

C14H8O4

The chemical formula of Alizarin shown above is based on the molecular formula indicating the numbers of each type of atom in a molecule without structural information, which is different from the empirical formula which provides the numerical proportions of atoms of each type.

The above chemical formula is the basis of stoichiometry in chemical equations, i.e., the calculation of relative quantities of reactants and products in chemical reactions. The law of conservation of mass dictates that the quantity of each element given in the chemical formula does not change in a chemical reaction. Thus, each side of the chemical equation must represent the same quantity of any particular element based on the chemical formula.

3D chemical structure image of Alizarin
Ball-and-stick model of Alizarin

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Additional Information for Identifying Alizarin Molecule


  • InChI (IUPAC International Chemical Identifier) information of Alizarin

    The molecular chemical formulas lack structural information. An alternative textual expression including the structural information is InChI. The full standard InChI of Alizarin is:

    InChI=1S/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18H

    It can provide a standard way to encode the molecular information of Alizarin to facilitate the search for the compound information in databases and on the web.

    The condensed, 27 character standard InChIKey (hashed version of the full standard InChI) of Alizarin is:

    InChIKey=RGCKGOZRHPZPFP-UHFFFAOYSA-N

    The InChIKey may allow easier web searches for Alizarin, but it needs to be linked to the full InChI to get back to the original structure of the Alizarin since the full standard InChI cannot be reconstructed from the InChIKey.

  • Other names (synonyms) or registry numbers of Alizarin

    The Alizarin compound may have different names depending on the various different situations of industrial applications. The list of the other names (synonyms) of Alizarin including the registry numbers is given below, if available:

    • 84754-86-9
    • 1328-02-5
    • 2,9-DIHYDROXY-1,10-DIHYDROANTHRACENE-1,10-DIONE
    • I14-16575
    • SR-05000002485-1
    • C-34292
    • AE-641/00185064
    • A837539
    • EN300-136088
    • D0242
    • 4CH-011256
    • L933
    • 1,2-bis(oxidanyl)anthracene-9,10-dione
    • SDCCGMLS-0066502.P001
    • RTR-023675
    • LN: L C666 BV IVJ EQ FQ1
    • 1,2-Dihydroxyanthra-9,10-quinone #
    • Rubia, alizarin crimson, 72-48-0
    • CCG-38668
    • BDBM50206434
    • ANW-36201
    • HMS3651P05
    • HMS1923C03
    • 60MEW57T9G
    • Alizarin, Dye content 97 %
    • ARONIS27045
    • Mordant red 11, Alizarin e
    • 1322-60-7
    • SPECTRUM210850
    • Epitope ID:116187
    • 9, 1,2-dihydroxy-
    • ATHRAQUINONES A
    • Sanyo Carmine l2BT
    • Alizarin, p.a.
    • 9,10-Anthracenedione, dihydroxy-
    • Turkey ree
    • Pincoffin
    • Hystazarin
    • 140861-55-8
    • CAS-72-48-0
    • W-104489
    • 1,10-Anthracenedione, 2,9-dihydroxy-
    • Az
    • MFCD00001201
    • Alizarin (C.I. 58000)
    • CI 58000
    • 1,2-Dihydroxy anthraquinone
    • DIHYDROXY-9,10-ANTHRACENEDIONE
    • 1,2-Dihydroxyanthrachinon [Czech]
    • Anthraquinone, 1,2-dihydroxy-
    • D and C Orange No. 15
    • 1,2-Dihydroxy-anthraquinone
    • C.I. 58000C
    • alizarin crimson
    • Rubia
    • rose madder
    • crimson madder
    • C.I. 58000
    • Turkey Red (VAN)
    • Alizarine paste 20% bluish
    • Alizarine Paste 20 percent Bluish
    • 9,10-Anthracenedione, 1,2-dihydroxy-
    • Alizarinprimeveroside
    • 1,2-Dihydroxyanthrachinon
    • Deep Crimson Madder 10821E
    • Deep Crimson Madder 10821
    • D and C Orange Number 15D
    • D And C Orange Number 15
    • C.I. Pigment Red 83C
    • C.I. Mordant Red 11C
    • C.I. Pigment Red 83
    • C.I. Mordant Red 11
    • 1,2-Dihydroxyanthra-9,10-quinone
    • Pigment red 83
    • Alizarine Lake Red IPX
    • Alizarine Lake Red 3P
    • Alizarine Lake Red 2P
    • Certiqual Alizarine D
    • Mitsui Alizarine BS
    • Sanyo Carmine L2B
    • 1,2-Dihydroxy-9,10-anthracenedione
    • Mitsui Alizarine B
    • Alizerine Red IPP
    • Alizarine Red IPP
    • Alizarine Red B2
    • Certiqual Alizarine
    • Alizarine indicator
    • Alizarine Red IP
    • 1,2-Dihydroxy-9,10-anthraquinone
    • Turkey Red W
    • Alizarine L paste
    • Eljon Madder M
    • Alizarine 3B
    • Alizarine Red L
    • Alizarine Red B
    • Alizerine NAC
    • Alizarine NAC
    • Eljon Madder
    • Alizarine B
    • Alizarine Red
    • Alizarina
    • ALIZARINE
    • 1,2-Anthraquinonediol
    • Turkey Red
    • Alizarin B
    • 1,2-Dihydroxyanthraquinone
    • Mordant Red 11
    • 1,2-dihydroxyanthracene-9,10-dione
    • Alizarin Red
    • 72-48-0
    • Alizarin

Alizarin Identification Summary Frequently Asked Questions (FAQs)

What’s the chemical formula of Alizarin?
C14H8O4
How many atoms and what are they in the Alizarin structure?
26 atom(s) - 8 Hydrogen atom(s), 14 Carbon atom(s), and 4 Oxygen atom(s)
How many chemical bonds and what are they in the Alizarin structure?
28 bond(s) - 20 non-H bond(s), 14 multiple bond(s), 2 double bond(s), 12 aromatic bond(s), 3 six-membered ring(s), 2 ten-membered ring(s), 2 ketone(s) (aromatic), and 2 aromatic hydroxyl(s)
What’s the molecular weight of Alizarin?
240.21092 g/mol
What’s the SMILES string of Alizarin?
Oc3ccc2C(=O)c1ccccc1C(=O)c2c3O
What’s the InChI of Alizarin?
InChI=1S/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18H
What’s the InChIKey of Alizarin?
RGCKGOZRHPZPFP-UHFFFAOYSA-N

2165 The contents of this page can freely be shared if cited as follows:
Source: Chemical Compounds Deep Data Source (CCDDS; https://www.molinstincts.com) based on 41 patented QSQN and QN technology
commercialized into Mol-Instincts database and ChemRTP, ChemEssen, Inc (2024).

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