Hypothiocyanite

Hypothiocyanite
	[OSCN]−
Names
	IUPAC name Oxido thiocyanate
	Other names Cyanosulfoxylate
Identifiers
CAS Number	63296-34-4;
3D model (JSmol)	Interactive image;
DrugBank	DB15309;
PubChem CID	124984;
UNII	N84CZ7T0OY;
	InChI InChI=1S/CHNOS/c2-1-4-3/h3H/p-1 Key: ZCZCOXLLICTZAH-UHFFFAOYSA-M;
	SMILES C(#N)S[O-];
Properties
Chemical formula	CNOS−
Molar mass	74.08 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Hypothiocyanite is the anion [OSCN]⁻ and the conjugate base of hypothiocyanous acid (HOSCN). It is an organic compound part of the thiocyanates as it contains the functional group SCN. It is formed when an oxygen is singly bonded to the thiocyanate group. Hypothiocyanous acid is a fairly weak acid; its acid dissociation constant (pK_a) is 5.3.

Hypothiocyanite is formed by peroxidase catalysis of hydrogen peroxide and thiocyanate:

H₂O₂ + SCN⁻ → OSCN⁻ + H₂O

Names
[OSCN]⁻
IUPAC name Oxido thiocyanate
Other names Cyanosulfoxylate
Identifiers
CAS Number	63296-34-4
3D model (JSmol)	Interactive image
DrugBank	DB15309
PubChem CID	124984
UNII	N84CZ7T0OY
InChI InChI=1S/CHNOS/c2-1-4-3/h3H/p-1 Key: ZCZCOXLLICTZAH-UHFFFAOYSA-M
SMILES C(#N)S[O-]
Properties
Chemical formula	CNOS⁻
Molar mass	74.08 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references