Xchem is an incorporated, PhD-led CRO uniting custom synthesis, regulated bioanalysis, and biocomputational modeling — supporting small-molecule, oligonucleotide, and bioconjugate programs from exploratory chemistry through the clinic.
Draw a structure or paste a SMILES, then search our catalogue by exact match or substructure. Need something we don't stock? Request a custom synthesis quote for anything you can draw.
A rotating selection from our specialty reagents — linkers, phosphoramidites, biotin reagents, and reference standards.




Xchem provides niche translational-science services to pharmaceutical and biotech developers across exploratory, preclinical, and clinical stages. We combine specialized synthetic chemistry, regulated bioanalytical development, and computational modeling under one roof — letting small and mid-sized innovators access senior scientific expertise without carrying it in-house.
Oligonucleotide phosphoramidites, bioconjugation & ADC linkers, and reference standards.
LC-MS/MS, HPLC, immunoassay, and ddPCR method development.
ICH Q2/Q3-aligned validation and transfer-ready methods.
Risk-based E&L aligned to ISO 10993 for FDA/EMA and 510(k) submissions.
Synthesis, purification, and characterization with Certificates of Analysis.
Virtual screening, molecular dynamics, and free-energy scoring.
Work is led by experienced PhD scientists across our disciplines — not handed down to junior staff.
Synthesis, bioanalysis, and computation coordinated by one accountable partner.
Methods and documentation built to ICH / ISO expectations and ready for transfer.
Niche, low-overhead capacity for the specialized work larger CROs deprioritize.
Tell us where a program is stuck — a difficult synthesis, a method that won't validate, or chemistry you want triaged before the bench. We'll scope it.