The Cobalt(II) fumarate, with the CAS registry number 85187-42-4, is also known as (E)-2-Butenedioic acid cobalt(II) salt. Its EINECS registry number is 286-132-1. This chemical's molecular formula is C₄H₂CoO₄ and molecular weight is 172.98948. What's more, its IUPAC name is called (E)-But-2-enedioate; cobalt(2+).

Properties Computed from Structure about Cobalt(II) fumarate are: (1) H-Bond Donor: 0; (2) H-Bond Acceptor: 4; (3) Rotatable Bond Count: 0; (4) Exact Mass: 172.928509; (5) MonoIsotopic Mass: 172.928509; (6) Topological Polar Surface Area: 80.3; (7) Heavy Atom Count: 9; (8) Formal Charge: 0; (9) Complexity: 108; (10) Isotope Atom Count: 0; (11) Defined Atom StereoCenter Count: 0; (12) Undefined Atom StereoCenter Count: 0; (13) Defined Bond StereoCenter Count: 1; (14) Undefined Bond StereoCenter Count: 0; (15) Covalently-Bonded Unit Count: 2.

You can still convert the following datas into molecular structure:
(1) SMILES: C(=CC(=O)[O-])C(=O)[O-].[Co+2]
(2) InChI: InChI=1S/C4H4O4.Co/c5-3(6)1-2-4(7)8;/h1-2H,(H,5,6)(H,7,
8);/q;+2/p-2/b2-1+;(3) InChIKey: RKHIWEUVOCCWMO-TYYBGVCCSA-L