Traceability. The analytical report behind this certificate names the manufacturing lot, and the vials sold under VA-2512-2631 were filled from it. The lot identifier itself stays internal: it is shared with every brand the manufacturer fills for, and publishing it would let anyone match this material to a certificate issued under another name.
Results
| Test | Specification | Result | Status |
|---|---|---|---|
| Appearance Visual inspection (Vantage Aminos) | White lyophilized powder | Conforms | PASS |
| Identity HPLC-UV-MS, positive polarity (+MS) | Theoretical mass ± 1.0 Da | 4960.58 Da (theor. 4960.48) | PASS |
| Purity HPLC-UV, area % · DAD 209.9-290.1 nm | ≥ 98.0 % | 98.32 % | PASS |
| Quantity Quantitation as reported | 90-110 % of label (5 mg) | 5.237 mg (104.7 % of label) | PASS |
| Largest single impurity HPLC-UV, area % | Report | 1.54 % at 6.98 min | REPORT |
| Water content Karl Fischer titration | ≤ 8 % w/w | 4.34 % w/w | PASS |
Open the certificate (PDF, opens in a new tab) Go to TB-500 All batch records
Identity and handling
Specimen readout VA-TB500-5MG
- CAS
- 77591-33-4
- FORMULA
- C212H350N56O78S
- MOL. WEIGHT
- 4963
- SEQUENCE
- Ac-Ser-Asp-Lys-Pro-Asp-Met-Ala-Glu-Ile-Glu-Lys-Phe-Asp-Lys-Ser-Lys-Leu-Lys-Lys-Thr-Glu-Thr-Gln-Glu-Lys-Asn-Pro-Leu-Pro-Ser-Lys-Glu-Thr-Ile-Glu-Gln-Glu-Lys-Gln-Ala-Gly-Glu-Ser
- FORM
- Lyophilized powder
- FILL
- 5 mg
- CONTAINER
- 3 mL vial
- MANUFACTURED
- 2026-04-30
- FILLED
- 2026-05-12
- ANALYSED
- 2026-05-17
- RETEST BY
- 2028-04-30
- STORAGE
- Refrigerated, 2-8 °C, protected from light
- DOCUMENT
- COA-VA-2512-2631 rev 1.1
Method
- Technique Reverse-phase HPLC with UV detection, MS confirmation
- Detection 209.9-290.1 nm (DAD range, not a single wavelength)
- MS technique HPLC-UV-MS (as printed on certificate)
- Ionisation Positive polarity (+MS)
- Scan range m/z 497.7 - 2997.6 (as plotted)
- Theoretical mass 4960.48 Da
- Observed mass 4960.58 Da
- Deviation +0.10 Da
Column, mobile phases, gradient, flow rate and injection volume are not stated on the laboratory report and are therefore not listed.