Thymosin Alpha 1

Only by name or origin. Thymosin alpha 1 is one defined peptide of 28 residues. Thymalin is a polypeptide complex extracted from calf thymus, thymulin a separate nonapeptide, and thymosin β4 a different peptide with its own page. Each has its own identity tests.

Same molecule, different status. Medicines that contain thymalfasin are drug products with their own formulation and labelling. We supply the peptide as lyophilized powder for research; it is not a medicine.

Without it the chain is a different substance, the non-acetylated recombinant form, lighter by the mass of one acetyl group. The mass result on the lot COA separates the two.

One kit is 10 vials of the same product at the same strength. Each vial holds the stated amount, for example 10 mg of lyophilized peptide; the few solutions are stated per vial in mg or ml. 1 kit per product and strength. One order can combine several products and strengths, each from 1 kit.

HPLC purity, MS identity, endotoxin and fill, on the COA of every lot of a stocked peptide. The COA carries the lot number, so you can match it to the vials you receive. Yes. Ask for the COA of the batch you are quoted; the batch number on that COA is the batch we ship.

In writing, per request. Prices are tiered by the number of kits of each peptide and strength; the quotation gives the unit price per kit, the shipping cost and the lead time. We reply within 24 hours.

Because listings describe different forms: a free peptide or a salt (acetate, TFA), a copper complex or its free peptide, one peptide or a two-peptide material — and some registries keep older numbers. Each product page says which form its values refer to; the COA of the lot is the reference. For Thymosin Alpha 1: Public records also list 69521-94-4 next to 62304-98-7; our product data follow the primary number of the GSRS substance record.