Ethambutol Hydrochloride

Tier C — Watch / trade

Speciality European Pharma Ltd

Originator

First approval

Expiry (public)

No sales data

Peak sales

Small molecule

Type

Targets：rpoB

Brand：Ebutol, Myambutol

Indications (approved)：Pulmonary tuberculosis

Regional status

Approved

1967-11-06

Approved

China

Approved

1982-01-01

Japan

Approved

1967-01-01

Factories producing this API1

Factories registered as producing this API in our sourcing network (RFQ records + product master), sorted by RFQ activity; the snapshot carries no cost or customer data.

1 producing factories on file — sign in to view the named list (factory details are not shown to guests).

Synthetic routes & intermediates2 routes

Originator routes × 0Optimised (non-patent) × 2Process routes × 0

Routes are ordered originator first, then optimised / process (non-patent) routes; each lists steps, overall yield and the intermediate table (code / CAS / name) — ready for supplier sourcing and RFQ. Rendered by this site from structured data; no third-party route graphics used.

OptimisedRoute 1Steps 2 · Total yield 27g(Ethambutol dihydrochloride (API))

Ethambutol Hydrochloride-00121691-49-6Ethambutol Hydrochloride-0025856-62-2Ethambutol Hydrochloride-003107-06-2Ethambutol Hydrochloride-0041070-11-7API · Ethambutol Hydrochloride

Code	CAS No.	Intermediate
Ethambutol Hydrochloride-001	21691-49-6	Methyl L-methioninate
Ethambutol Hydrochloride-002	5856-62-2	(2S)-2-Aminobutan-1-ol
Ethambutol Hydrochloride-003	107-06-2	Glycol dichloride
Ethambutol Hydrochloride-004	1070-11-7	(2S,2'S)-2,2'-(Ethane-1,2-diyldiimino)dibutan-1-ol dihydrochloride

OptimisedRoute 2Steps 6 · Total yield /

Ethambutol Hydrochloride-00540348-66-1Ethambutol Hydrochloride-006133649-29-3Ethambutol Hydrochloride-007—Ethambutol Hydrochloride-008909567-50-6Ethambutol Hydrochloride-009157555-74-3Ethambutol Hydrochloride-01079-37-8Ethambutol Hydrochloride-011909567-52-8API · Ethambutol Hydrochloride

Code	CAS No.	Intermediate
Ethambutol Hydrochloride-005	40348-66-1	(R)-1,2-Butanediol
Ethambutol Hydrochloride-006	133649-29-3	O-TBDMS-1,2(R)-butanediol
Ethambutol Hydrochloride-007	-	(2S)-1-[[tert-Butyl(dimethyl)silyl]oxy]butan-2-yl methanesulfonate
Ethambutol Hydrochloride-008	909567-50-6	[[(2S)-2-Azidobutyl]oxy](tert-butyl)dimethylsilane
Ethambutol Hydrochloride-009	157555-74-3	(2S)-1-[[tert-Butyl(dimethyl)silyl]oxy]butan-2-amine
Ethambutol Hydrochloride-010	79-37-8	Oxalyl dichloride
Ethambutol Hydrochloride-011	909567-52-8	N,N'-Bis[(2S)-1-[[tert-butyl(dimethyl)silyl]oxy]butan-2-yl]ethanediamide

Frequently asked questions

What are the approved indications of Ethambutol Hydrochloride?

Approved indications include: Pulmonary tuberculosis.

When does the Ethambutol Hydrochloride patent expire?

No public expiry year is available for Ethambutol Hydrochloride yet; this page updates once verified.

How many synthesis routes are recorded for Ethambutol Hydrochloride?

2 synthesis routes are recorded; the shortest is 2 steps with 27g(Ethambutol dihydrochloride (API)) total yield. Intermediates in each route carry codes and CAS numbers.

Where can I buy Ethambutol Hydrochloride intermediates?

All intermediates in Ethambutol Hydrochloride routes have CAS profiles — you can submit an RFQ per CAS and it enters the Unibest matching pool.

How do I get a quote for Ethambutol Hydrochloride intermediates?

Open the CAS profile of the target intermediate from this page, or submit an RFQ directly — the CAS enters the matching flow automatically and the supply network responds with quotes.

Source: cross-verified data (structured fields only) · 2026-09-27