Lot B7414 is one of 6 lots of PT-141 we have release-tested for this catalog, scored on purity, quantity, and batch traceability. Independent third-party HPLC/MS verification of this lot is available on request.
9.5/10
A+ Excellent
Purity
3.5 / 4
Quantity
4.0 / 4
Identifier
2.0 / 2
The test score is calculated from purity (how much of the vial content is the expected compound, with values closest to 100% best and below 98% considered unacceptable), quantity (how close the measured amount is to the label claim, more than plus or minus 20% is unacceptable), and identifier (whether the batch this vial came from can be traced to a certificate).
Sample details
ProductPT-141 10mg
Sample typeSealed retail vial
Date received24 Apr 2026
Physical detailsPrinted label / aluminum crimp / blue cap
Test details
MethodRP-HPLC-UV + LC-MS
Tested on26 Apr 2026
Tested byRTT Peptides QC
ReportQC-27343
Score breakdown
Purity
99.27%
3.5 / 4
Measured purity by RP-HPLC-UV against the ≥ 98.0% release specification. Net peptide content 95.3%.
Quantity
10.1mg
4.0 / 4
Label claim 10mg, measured 10.1mg, divergence +1.0%. Within plus or minus 5% of label scores full marks.
Identifier
B7414
2.0 / 2
Batch identifier printed on the vial and traceable to this certificate, so the lot can be verified end to end.
Sample logistics
18 Apr 2026
Sample logged for release testing
24 Apr 2026
Received and processed at the QC facility
26 Apr 2026
Assayed by RP-HPLC-UV with LC-MS confirmation
27 Apr 2026
Certificate of analysis issued and released
Certificate authentication
Test certificate ID0hzqa57
ProductPT-141 10mg from RTT Peptides
Batch IDB7414
Tested byRTT Peptides QC on 26 Apr 2026
Verification URL
https://rttpeptides.com/verify/coa/pt-141-B7414/
Detailed certificate of analysis
RTT PEPTIDES · QUALITY ASSURANCE
Analytical release certificate · RP-HPLC-UV with LC-MS confirmation Independent third-party verification available on request.
ReportQC-27343Issued2026-04-27Page1 of 1
Certificate of AnalysisPT-141 · Lot B7414
SamplePT-141
Issued forRTT Peptides
Lot / BatchB7414
Label claim10mg
CAS189691-06-3
AppearanceWhite lyophilized powder
Date received2026-04-24
Date analyzed2026-04-26
01 Purity by RP-HPLC-UV
Figure 1 · Reverse-phase HPLC-UV chromatogram at 214 nm. C18, 2.7 µm; gradient 0.1% TFA in water / acetonitrile at 1.0 mL/min.
Purity by RP-HPLC-UV: component retention time, peak area, and area percent
#
Component
RT (min)
Area (mAU·s)
Area %
1
RRT 0.68
5.65
10.5
0.25
2
PT-141 ▸ main
8.28
4169.3
99.27
3
RRT 1.36
11.23
20.2
0.48
✓
Purity (HPLC) 99.27% · net peptide content 95.3% · meets the ≥ 98.0% release specification.
02 Identity by LC-MS
Expected average mass1025.18 Da
Observed mass1025.07 Da
✓
Identity confirmed · observed mass conforms to the expected structure of PT-141.
03 Summary of results
Summary of results: test, method, specification, result, and outcome
Test
Method
Specification
Result
Outcome
Purity
RP-HPLC-UV, 214 nm
≥ 98.0 %
99.27 %
✓ Pass
Identity
LC-MS (ESI+)
Consistent with structure
Confirmed
✓ Pass
Net peptide content
By difference
Report
95.3 %
n/a
Appearance
Visual
White lyophilized powder
Conforms
✓ Pass
Reconstitution
Bacteriostatic water
Clear, particulate-free
Conforms
✓ Pass
The submitted lot conforms to identity and meets the stated purity specification. Analysis was performed by RP-HPLC-UV with LC-MS confirmation. Results relate only to the lot as received and tested and do not constitute a certificate of any third party.
Quality Assurance · RTT Peptides
Issued under the RTT Peptides quality program; this is the vendor's own release certificate. Independent third-party HPLC/MS verification of any lot is available on request. Products are supplied strictly as research reagents for in-vitro laboratory use only, not for human or animal consumption. Report QC-27343 · RP.
This is the vendor's own release certificate. Independent third-party HPLC/MS verification of this lot is available on request.
Research use only
RTT Peptides sells laboratory research reagents. They are not for human or animal consumption. Please confirm the statements below to place your order.
