Analyst
A. Reyes, B.S.
04 / Laboratory register
A receipt /
for every milligram.
Every lot we synthesize ships with a certificate of analysis that includes the chromatogram, the mass spectrum, an endotoxin reading, and the lot release date. The format below is the standard. To request the specific report for a vial you have, quote the lot number printed on the cap.
DALTON / COA
RETA-39
10 MG · Lyophilized
Lot DLT-241002-B1
Lot DLT-241002-B1
Compound
Retatrutide
Sequence ID
RTT-39-mod
Mol. weight
4731.42 g/mol
HPLC purity
98.74 %
ESI-MS m/z
[M+4H]⁴⁺ 1183.86
Mass deviation
+ 0.21 Da
Endotoxin
< 0.8 EU/mg (rFC)
Water content
2.9 % (KF)
Acetate
4.6 % (IC)
Storage
−20 °C · desiccated
Date of synthesis
2024-09-28
Date of release
2024-10-02
Released by
M. Ostrander, Ph.D.
M. Ostrander, Ph.D.
02 / What you'll find on every COA
A short, honest document.
01
Lot identifier & release date
The DLT- prefixed lot code printed on the vial cap, plus the date of synthesis and the date of release.
02
HPLC purity figure
Reverse-phase C18 chromatogram, integration in valley-to-valley baseline, detection at 220 nm.
03
ESI-MS identity
Observed and calculated monoisotopic masses. Deviation greater than 0.5 Da fails the lot.
04
Endotoxin & residuals
Endotoxin via recombinant Factor C, water by Karl-Fischer, acetate by ion chromatography.
05
Analyst & release sign-off
Two named signatures on every release. We do not auto-generate certificates.
03 / Synthesis & QC
How a vial gets to you.
We perform every step on-site — synthesis, purification,
analytical QC, endotoxin clearance, lyophilization, and
dispatch. No brokered material. No outside contract labs
touching anything that goes in a Dalton vial.
01—
Solid-phase synthesis · Fmoc.
·
02—
Reverse-phase HPLC purification.
·
03—
Identity by ESI mass spec.
·
04—
Endotoxin clearance · rFC.
·
05—
Lyophilization & capping.
·
06—
Cold storage at −20 °C.
·
07—
COA signed & logged.
·
08—
Dispatch · cold-chain.
·
04 / Cold-chain shipping
From the freezer
From the freezer
to your bench.
Dispatch leaves Phoenix Tuesday through Friday between 7 and
10 a.m. local time. Domestic shipments transit overnight via
FedEx Priority. International transit is 2 to 4 working days
via FedEx International Priority with optional temperature
logger.
01 · Domestic
Free above $200.
$18 flat below threshold. Overnight transit via FedEx Priority. Released signature required at delivery.
02 · International
2 to 4 working days.
Quoted at checkout. Temperature loggers optional. Customs documentation prepared for research import codes.
03 · Packaging
Plain & discreet.
Dry ice for liquids, gel packs for lyophilized vials. Validated 72-hour cold window. No third-party labelling externally.
05 / Returns policy
If the lot fails, we replace it.
If you receive a vial that arrives broken, fails to reconstitute,
or does not match its certificate, reply to your order email
with a photograph within 14 days. We will replace the lot at
our cost. We do not accept returns of opened vials for any
other reason.