Carbimazole C₇H₁₀N₂O₂S

Active ingredient description

Carbimazole, a thionamide, is a pro-drug which undergoes rapid and virtually complete metabolism to the active metabolite, thiamazole, also known as methimazole. The method of action is believed to be inhibition of the organification of iodide and the coupling of iodothyronine residues which in turn suppress the synthesis of thyroid hormones.

Medicine classification

This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:

ATC code
Group title
H Systemic hormonal preparations, excl. Sex hormones and insulins → H03 Thyroid therapy → H03B Antithyroid preparations → H03BB Sulfur-containing imidazole derivatives
Discover more medicines within H03BB01

Product monographs

Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):

Information Source
Document Type
Medicines & Healthcare Products Regulatory Agency (GB)
Summary of Product Characteristics (SPC)

Structural formula

Graphic representation of the active ingredient's molecular structure

Chemical formula: C₇H₁₀N₂O₂S
Molecular mass: 186.232 g/mol

External identifiers

CAS Substance: 22232-54-8
DrugBank Drug: DB00389
KEGG Drug: D07616
PubChem Compound: 31072
RxNorm Ingredient: 2020
SNOMED-CT Concept: 395831005
Carbimazole (substance)
UNII Identifier: 8KQ660G60G


Carbimazole is an active ingredient of these brands:

Australia (AU)

Finland (FI)

France (FR)

Hong Kong (HK)

Ireland (IE)

New Zealand (NZ)

Nigeria (NG)

Singapore (SG)

Spain (ES)

While we strive to include the brand names of medicines across all countries, our index remains incomplete. Therefore, it is possible that this medicine may also be marketed under different names in other countries.

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