L-Carnitine certificate of analysis, lot PL-2610-118
Certificate PL-26-00232 reports the release tests for L-Carnitine lot PL-2610-118: 99.50% purity by reverse-phase HPLC and identity confirmed by LC-MS, tested October 6, 2026. The lot number printed on each unit matches this certificate.
| Certificate number | PL-26-00232 |
|---|---|
| Lot number | PL-2610-118 |
| Compound | L-Carnitine 10 mL |
| Sequence | (R)-3-Hydroxy-4-(trimethylammonio)butanoate; zwitterionic quaternary ammonium compound; strongly hygroscopic. |
| Molecular formula | C7H15NO3 |
| CAS number | 541-15-1 |
| Purity (RP-HPLC) | 99.50% |
| Identity (LC-MS) | Conforms (161.21 Da) · expected 161.2 Da, found 161.21 Da |
| Method | RP-HPLC (UV 214 nm) + LC-MS |
| Tested | October 6, 2026 |
| Retest by | October 5, 2028 |
| Tested by | Manufacturer’s in-house laboratory (not an independent third-party test) |
| Conclusion | Conforms |
Tests run on this lot
| Test | Method | Specification | Result |
|---|---|---|---|
| Identity (mass) | LC-MS, ESI positive | Theoretical ± 1.0 Da | 161.21 Da (PASS) |
| Purity | RP-HPLC, UV 254–306 nm, area% | ≥ 99.0% | 99.50% (PASS) |
| Largest impurity | RP-HPLC, area% | ≤ 1.0% | 0.19% (RT 6.10) (PASS) |
| Water content | Karl Fischer | ≤ 5.0% | 0.97% (PASS) |
| Bacterial endotoxin | LAL, kinetic | ≤ 5.0 EU/mg | 0.055 EU/mg (PASS) |
| Sterility | USP <71>, 14-day | No growth | No growth (PASS) |
What these results mean
HPLC purity is the share of UV-detectable material that elutes as the target compound; it is not the same as net peptide content, which also accounts for water and counter-ions. Identity means the measured mass matched the mass calculated for the compound. A certificate reports only the tests run on this lot; endotoxin, sterility and contaminant panels are not part of standard lot release. How to read a certificate of analysis.
L-Carnitine · Verify this certificate · All certificates
Other L-Carnitine lots
- PL-26-00060, lot PL-2609-060, 99.82%, tested September 19, 2026
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