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Structure & Deep Data of Etidronic acid (C2H8O7P2)

Identification of Etidronic acid Chemical Compound

2D chemical structure image of Etidronic acid
Chemical Formula C2H8O7P2
Molecular Weight 206.02824 g/mol
IUPAC Name (1-hydroxy-1-phosphonoethyl)phosphonic acid
SMILES String CC(O)(P(O)(O)=O)P(O)(O)=O
InChI InChI=1S/C2H8O7P2/c1-2(3,10(4,5)6)11(7,8)9/h3H,1H3,(H2,4,5,6)(H2,7,8,9)
InChIKey DBVJJBKOTRCVKF-UHFFFAOYSA-N

Chemical Structure Description

A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. The Etidronic acid molecule contains a total of 18 bond(s). There are 10 non-H bond(s), 2 multiple bond(s), 2 rotatable bond(s), 2 double bond(s), 5 hydroxyl group(s), and 2 phosphonate(s) (thio-). Images of the chemical structure of Etidronic acid are given below:

2D chemical structure image of Etidronic acid
2-dimensional (2D) chemical structure image of Etidronic acid
3D chemical structure image of Etidronic acid
3-dimensional (3D) chemical structure image of Etidronic acid

The 2D chemical structure image of Etidronic acid is also called skeletal formula, which is the standard notation for organic molecules. The carbon atoms in the chemical structure of Etidronic acid are implied to be located at the corner(s) and hydrogen atoms attached to carbon atoms are not indicated – each carbon atom is considered to be associated with enough hydrogen atoms to provide the carbon atom with four bonds.

The 3D chemical structure image of Etidronic acid is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical structure model of Etidronic acid. Download structure data file (SDF/MOL) file of this compound.


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Interactive 3D Visualization

For a better understanding of the chemical structure, an interactive 3D visualization of Etidronic acid is provided here.

The Etidronic acid molecule shown in the visualization screen can be rotated interactively by keep clicking and moving the mouse button. Mouse wheel zoom is available as well – the size of the Etidronic acid molecule can be increased or decreased by scrolling the mouse wheel.

The information of the atoms, bonds, connectivity and coordinates included in the chemical structure of Etidronic acid can easily be identified by this visualization. By right-clicking the visualization screen, various other options are available including the visualization of van der Waals surface and exporting to an image file.


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  • InChI: InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
  • InChIKey: LFQSCWFLJHTTHZ-UHFFFAOYSA-N

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Additional Information for Identifying Etidronic acid Molecule

  • SMILES (Simplified Molecular-Input Line-Entry System) string of Etidronic acid

    The SMILES string of Etidronic acid is CC(O)(P(O)(O)=O)P(O)(O)=O, which can be can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the Etidronic acid.

  • Structure Data File (SDF/MOL File) of Etidronic acid

    The structure data file (SDF/MOL File) of Etidronic acid is available for download in the SDF page of Etidronic acid, which provides the information about the atoms, bonds, connectivity and coordinates of Etidronic acid. The Etidronic acid structure data file can be imported to most of the cheminformatics software systems and applications.

  • Chemical formula of Etidronic acid

    The molecular formula of Etidronic acid is available in chemical formula page of Etidronic acid, which identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.

  • Molecular weight of Etidronic acid

    The molecular weight of Etidronic acid is available in molecular weight page of Etidronic acid, which is calculated as the sum of the atomic weights of each constituent element multiplied by the number of atoms of that element in the molecular formula.

  • Other names (synonyms) or registry numbers of Etidronic acid

    The Etidronic acid compound may be called differently depending on the various different situations of industrial applications. Below are the list of the other names (synonyms) of Etidronic acid including the various registry numbers, if available:

    • Didronelreg
    • C-10211
    • 83047-25-0
    • 1-Hydroxyethane-1,1,-diphosphonic acid 60% aqueous solution
    • 1-Hydroxyethylidenediphosphonic acid 60% aqueous solution
    • (1-Hydroxyethane-1,1-diyl)diphosphonic acid monohydrate
    • 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (Powder)
    • J-504794
    • (1-Hydroxyethylidene)bisphosphonic acid monohydrate
    • A23202
    • 1-hydroxy ethylidene-1,1-diphosphonic acid
    • CAS-2809-21-4
    • K958
    • 1-HydroxyEthylidene-1,1-DiphosphonicAcid
    • 1-Hydroxyethane-1,1,-diphosphonic acid
    • RTR-012472
    • Etidronic acid, 60% aqueous solution
    • (1-hydroxyethylidene)bis-phosphonicaci
    • Etidronic acid 60% aqueous solution
    • BDBM50115102
    • ANW-46810
    • (1-hydroxyethylidene)di-phosphonicaci
    • HY-B0302
    • (1-hydroxyethylene)diphosphonicacid
    • HMS3604E03
    • (hydroxyethylidene)diphosphonicacid
    • GTPL7184
    • 1,1,1-ethanetrioldiphosphonate
    • M2F465ROXU
    • 1-hydroxyethanediphosphonica
    • Didronel Inj 50mg/ml
    • Didronel Tab 200mg
    • OEDFK
    • HDEPA
    • 1-hydroxy ethylidene
    • Mylan-etidronate
    • C2H8O7P2
    • Act Etidronate
    • Apo-etidronate
    • Etidronsaure
    • ethydronate
    • ethidronate
    • 86159-18-4
    • 85985-26-8
    • 853028-38-3
    • 66216-98-6
    • 51888-66-5
    • 303177-33-5
    • 192526-55-9
    • 138360-84-6
    • 129130-42-3
    • 106908-76-3
    • 103736-66-9
    • 100511-44-2
    • I14-1271
    • 66052-91-3
    • (1-Hydroxy-1,1-ethanediyl)bis(phosphonic acid)
    • D02373
    • (1-Hydroxy-1-phosphono-ethyl)-phosphonic acid
    • H0587
    • 1-Hydroxyethylidene 1,1-diphosphonic acid
    • ethane-1-hydroxy-1,1-bisphosphonic acid
    • 14860-53-8 (tetra-potassium salt)
    • 1-hydroxyethane 1,1-diphosphonic acid
    • MFCD00070585
    • Ethane-1-hydroxy-1,1-bisphosphonate
    • Etidron
    • 1-Hydroxyethylidenediphosphonic acid
    • Phosphonic acid, P,P'-(1-hydroxyethylidene)bis-
    • Cintichem Technetium 99m Hedspa
    • (1-hydroxy-1-phosphono-ethyl)phosphonic acid
    • Jsp005415
    • Bio-0708
    • Etidronic acid (USAN/INN)
    • MPI Stannous Diphosphonate
    • Phosphonic acid, 1-hydroxy-1,1-ethanediyl ester
    • (1-Hydroxyethylidene)bisphosphonic acid
    • 1-Hydroxyethylidene-1,1-biphosphonate
    • Phosphonic acid, (1-hydroxyethylidene)di-
    • RP 61
    • Didronel IV
    • Etidronic acid [USAN:INN:BAN]
    • (1-hydroxyethane-1,1-diyl)bis(phosphonic acid)
    • Osteoscan
    • (1-Hydroxyethylidene)diphoshonic acid
    • Hydroxyethane-1,1-diphosphonic acid
    • (1-Hydroxyethylidene)bis(phosphonic acid)
    • Ethane-1-hydroxy-1,1-diphosphonic acid
    • 1-Hydroxyethane-1,1-bisphosphonic acid
    • 1,1,1-Ethanetriol diphosphonate
    • 1-Hydroxyethylidene-1,1-bisphosphonate
    • Acidum etidronicum [INN-Latin]
    • Acido etidronico [INN-Spanish]
    • Acide etidronique [INN-French]
    • (1-Hydroxyethylidene)diphosphonic acid
    • 1000SL
    • Ethane-1-hydroxy-1,1-diphosphonate
    • (1-Hydroxyethylene)diphosphonic acid
    • (Hydroxyethylidene)diphosphonic acid
    • 1-HYDROXY-1,1-DIPHOSPHONOETHANE
    • 1-Hydroxyethanediphosphonic acid
    • 1-Hydroxyethane-1,1-diphosphonate
    • (1-Hydroxyethane-1,1-diyl)diphosphonic acid
    • Phosphonic acid, (1-hydroxyethylidene)bis-
    • 1-Hydroxyethane-1,1-diphosphonic acid
    • Diphosphonate (base)
    • Ferrofos 510
    • Acidum etidronicum
    • Dequest Z 010
    • Dequest 2015
    • Dequest 2010
    • Acide etidronique
    • Acido etidronico
    • Oxyethylidenediphosphonic acid
    • Hydroxyethanediphosphonic acid
    • Acetodiphosphonic acid
    • Turpinal SL
    • Didronel
    • Etidronsaeure
    • EHDP
    • 1-Hydroxyethylidene-1,1-diphosphonic acid
    • HEDP
    • etidronate
    • 2809-21-4
    • Etidronic acid

Etidronic acid Identification Summary Frequently Asked Questions (FAQs)

What’s the chemical formula of Etidronic acid?
C2H8O7P2
How many atoms and what are the elements included the Etidronic acid molecule?
19 atom(s) - 8 Hydrogen atom(s), 2 Carbon atom(s), 7 Oxygen atom(s), and 2 Phosphorous atom(s)
How many chemical bonds and what kind of bonds are included the Etidronic acid structure?
18 bond(s) - 10 non-H bond(s), 2 multiple bond(s), 2 rotatable bond(s), 2 double bond(s), 5 hydroxyl group(s), and 2 phosphonate(s) (thio-)
What’s the Etidronic acid’s molecular weight?
206.02824 g/mol
What’s the SMILES code of Etidronic acid?
CC(O)(P(O)(O)=O)P(O)(O)=O
What’s the InChI string of Etidronic acid?
InChI=1S/C2H8O7P2/c1-2(3,10(4,5)6)11(7,8)9/h3H,1H3,(H2,4,5,6)(H2,7,8,9)
What’s the InChIKey code of Etidronic acid?
DBVJJBKOTRCVKF-UHFFFAOYSA-N

1038 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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