Safety Reference
Danger
H290May be corrosive to metals
Sourcing Etidronic acid?
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(11alpha)-18-Hydroxy-3,20-dioxo-11,18-epoxypregn-4-en-21-yl acetate
pharmaceutical raw material
Sourcing Etidronic acid?
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Etidronic acid is a bisphosphonate compound that inhibits the formation and dissolution of hydroxyapatite crystals by adsorbing to calcium phosphate surfaces. It is used as a chelating agent and in pharmaceutical manufacturing as a bone resorption inhibitor.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
The international HS code for Etidronic acid (CAS 2809-21-4) is 2931.49.
2931.49
2931 49 30
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
(1-hydroxy-1-phosphonoethyl)phosphonic acid
DBVJJBKOTRCVKF-UHFFFAOYSA-N
CC(O)(P(=O)(O)O)P(=O)(O)O