Linkers

A selection of linkers and intermediates are available to purchase directly from Apex Molecular. These compounds are used in predominantly in the development of ADCs and are synthesised in our laboratories.

Val-Cit

Name	CAS	Spec	Quantity
Fmoc-Val-Cit-OH	159858-21-6	>95%	1 g 2 g 5 g bulk
Fmoc-Val-Cit-PAB	159858-22-7	>95%	1 g 2 g 5 g bulk
Fmoc-Val-Cit-PAB-PNP	863971-53-3	>95%	100 mg 250 mg 1 g bulk
Boc-Val-Cit-OH	870487-08-4	>95%	1 g 2 g 5 g bulk
Boc-Val-Cit-PAB	870487-09-5	>95%	1 g 2 g 5 g bulk
Boc-Val-Cit-PAB-PNP	870487-10-8	>95%	100 mg 250 mg 1 g bulk
Alloc-Val-Cit-OH		>95%	1 g 2 g 5 g bulk
Alloc-Val-Cit-PAB	1608127-09-8	>95%	1 g 2 g 5 g bulk
Alloc-Val-Cit-PAB-PNP		>95%	100 mg 250 mg 1 g bulk

Val-Ala

Name	CAS	Spec	Quantity
Fmoc-Val-Ala-OH	150114-97-9	>95%	1 g 2 g 5 g bulk
Fmoc-Val-Ala-PAB	1394238-91-5	>95%	1 g 2 g 5 g bulk
Fmoc-Val-Ala-PAB-PNP	1394238-92-6	>95%	100 mg 250 mg 1 g bulk
Boc-Val-Ala-OH	70396-18-8	>95%	1 g 2 g 5 g bulk
Boc-Val-Ala-PAB	1884577-99-4	>95%	1 g 2 g 5 g bulk
Boc-Val-Ala-PAB-PNP	1884578-00-0	>95%	100 mg 250 mg 1 g bulk
Alloc-Val-Ala-OH	330970-70-2	>95%	1 g 2 g 5 g bulk
Alloc-Val-Ala-PAB	1343407-91-9	>95%	1 g 2 g 5 g bulk
Alloc-Val-Ala-PAB-PNP	1884578-27-1	>95%	100 mg 250 mg 1 g bulk

More about us

Back to What we do

Manage Cookie | Privacy and Cookies Policy

Company Closure

26/03/2026

An update on the future of Apex Molecular.

It is with great sadness that we announce the closure of Apex Molecular.

Unfortunately, the persistently challenging market conditions have made it impossible for the business to continue and after reviewing the options to the business, this solvent closure allows the company to conclude remaining projects and commitments over the next months.

Regrettably the closure will result in the loss of all jobs. We are no longer accepting project enquiries, have initiated the closure of the business and over the next 2 months we will exit our facilities.

While this marks the end of our journey, we depart with immense pride in the contributions we have made to the industry across the Life Sciences, Agtech, and the Applied Materials sectors.

We are incredibly proud of the work we have accomplished and the scientific milestones we have supported, particularly in preclinical drug discovery.

We want to extend our deepest gratitude to our customers, partners/collaborators, and most importantly, our exceptional team, both past and present. Their skills, innovation, communication and dedication have been the heartbeat of the company, and the reason customers came back with new projects again and again.

We are committed to handling this closure with the same integrity and transparency that defined our operations over the last 15 years.

Thank you to everyone who has supported our journey.

Linkers

Val-Cit

Val-Ala

More about us

Make an enquiry