Epic Wholesalers LLC -dba-Epic Peptides Lab

Certificate of Analysis · Lot release

www.epicpeptideslab.com

Certificate no.

PL-26-00314

Verification key

9T7X6VSQ

Scan or enter both at
prymalab.net/testing/verify

Certificate of Analysis · Lot release · Issued for Epic Wholesalers LLC -dba-Epic Peptides Lab

TB-500 5 mg/mL Pen

Lot PL-2610-201 · Solution · Label claim 5 mg/mL

Tested in-house by PrymaLab

In-house analytical result,
not an independent third-party test

Lot / batch number

PL-2610-201

Date made

2026-10-07

Date of analysis

2026-10-08

Date issued

2026-10-22

Retest / expiry

2028-10-07

Units in lot / sampled

238 / 2

Storage

—

Certificate type

Lot COA, 2 pages

Compound

TB-500

N-acetyl thymosin β4, full-length 43-residue peptide

CAS number

77591-33-4

Molecular formula

C₂₁₂H₃₅₀N₅₆O₇₈S

Theoretical mass (avg.)

4,963.44 Da

Sequence

Ac-43-aa Tbeta4

Purity · RP-HPLC, area %

99.50%

Specification ≥ 99.0% • main peak at 14.77 min

Identity · Observed Mass

4,963.43 Da

Theoretical 4,963.44 Da • −0.01 Da (2 ppm)

Overall conclusion

PASS

Meets every specification for the tests performed

Test	Method	Specification	Result	Conclusion
Identity (mass)	LC-MS, ESI positive	Theoretical ± 1.0 Da	4,963.43 Da	PASS
Purity	RP-HPLC, UV 214 nm, area%	≥ 99.0%	99.50%	PASS
Largest impurity	RP-HPLC, area%	≤ 1.0%	0.22% (RT 15.60)	PASS
Assay (label claim)	Assay vs label claim	4.75–5.25 mg/mL	4.95 mg/mL	PASS
Bacterial endotoxin	LAL, kinetic	≤ 5.0 EU/mg	0.158 EU/mg	PASS
Sterility	USP <71>, 14-day	No growth	No growth	PASS

1HPLC chromatogram

Data file: PL-2610-201-HPLC.raw · Column C18, 150 × 4.6 mm · UV 214 nm

Peak plot drawn from the integrated peak table (area %, log scale); it is not the instrument trace, which is retained in PL-2610-201-HPLC.raw. † Nominal reference retention time for the assigned impurity; the main-peak RT is observed in this lot.

Epic Wholesalers LLC -dba-Epic Peptides Lab

Certificate of Analysis · continued

TB-500 5 mg/mL Pen · Lot PL-2610-201 · Certificate PL-26-00314

Lot PL-2610-201

Method, peak table and approval

2HPLC method · PL-2610-201-HPLC.raw

Instrument

Waters Alliance e2695

Data System

Empower 3

Detector

UV absorbance

Detection Wavelength

214 nm

Column

C18, 150 × 4.6 mm, 3.5 µm

Mobile Phase A

0.1% TFA in water

Mobile Phase B

0.1% TFA in MeCN

Gradient

5–95% B over 25 min (linear)

Flow Rate

1.0 mL/min

Column Temperature

40 °C

Injection Volume

10 µL

3Gradient program

Time (min)	% A	% B
0.0	95	5
25.0	5	95

4Peak table

Peak	RT (min)	Area	Area %
1	13.20 †	—	0.13
2	13.90 †	—	0.15
3	14.77	—	99.50
4	15.60 †	—	0.22
Total		—	100.00

Peaks: 1 deamidation product; 2 isoaspartate (isoasp) variant; 3 main peak (TB-500); 4 truncated sequence · Area % from the integrated peak table (absolute areas are not part of the lot-release export) · † nominal reference RT for the assigned impurity · Purity = main peak area ÷ total integrated area × 100, to two decimals; main peak shaded.

5Identity by mass spectrometry

Instrument

Waters SQD

Ionization / Mode

ESI, positive

Reference m/z (charge)

1241.87 (4+) · 993.70 (5+)

Deconvoluted Mass

4,963.43 Da

Theoretical Mass

4,963.44 Da

Difference

−0.01 Da (2 ppm)

Data File

PL-2610-201-MS.d

Acceptance

Within ± 1.0 Da

6Additional tests

Test	Performed by	Date	Report / file
Assay vs label claim	PrymaLab Analytical	2026-10-08	—
Endotoxin (LAL, kinetic)	PrymaLab Analytical	2026-10-08	—
Sterility (USP <71>, day-14 read-out)	PrymaLab Analytical	2026-10-22	—

A test with no row here was not performed on this lot. Outside-laboratory reports, when used, are attached and named below.

7Review and approval

D. Reynolds
Analyst · performed the testing
Date: 2026-10-22

S. Calloway
Reviewer · checked against raw data
Date: 2026-10-22

M. Phelps
Lab Director · approved for release
Date: 2026-10-22