GLP-1 raw material · manufactured by Pepti, Guangzhou
GLP-1 raw material supplier: six compounds, one batch-record standard
Semaglutide, tirzepatide, retatrutide, cagrilintide, mazdutide and survodutide, synthesized and released at one Guangzhou site, supplied as raw powder or lyophilized vials, each lot with a certificate reporting HPLC purity and MS identity. Public batch records are on peptioem.com; this site tells you what they mean and how to order.
Frames from the Guangzhou site
Stills from the vial line where the six compounds are filled; alt text is kept factual and no facility claim is attached to them.
The six compounds
Every compound page gives the CAS number, PubChem formula and weight, specification, formats, unit system, lead-time ladder, links to public batch records and four buyer questions. Nothing else is sold on this site.
Semaglutide
GLP-1 receptor agonist
CAS 910463-68-2· 4114 g/molPublished batch range: 98.7%–99.6% by HPLC across 7 public records.
Specification, records and FAQ →Tirzepatide
Dual GIP / GLP-1 receptor agonist
CAS 2023788-19-2· 4813 g/molPublished batch range: 98.4%–99.7% by HPLC across 9 public records.
Specification, records and FAQ →Retatrutide
Triple GIP / GLP-1 / glucagon receptor agonist
CAS 2381089-83-2· 4731 g/molPublished batch range: 98.72%–99.55% by HPLC across 9 public records.
Specification, records and FAQ →Cagrilintide
Long-acting amylin analogue
CAS 1415456-99-3· 4409 g/molPublished batch result: 99.2% by HPLC (2 public records).
Specification, records and FAQ →Mazdutide
Dual GLP-1 / glucagon receptor agonist
CAS 2259884-03-0· 4476 g/molPublished batch range: 99.12%–99.37% by HPLC across 2 public records.
Specification, records and FAQ →Survodutide
Dual glucagon / GLP-1 receptor agonist
CAS 2805997-46-8· 4232 g/molPublished batch range: none yet (no public record for this compound).
Specification, records and FAQ →
How supply works: sample, batch, repeat
Three steps, three typical windows, one unit system.
- Sample kits5–10 days
typically, for 1-kit sample orders of a listed GLP-1 compound
- Production batch14–21 days
typically, for a first production batch after specification is confirmed
- OEM repeat order21–28 days
typically, for private-label repeat batches with artwork already approved
Lead times are typical ranges, not commitments; the applicable window is confirmed on each RFQ.
Step one: a sample kit
A first order is 1 kit (10 vials) of one compound and one strength. It is filled from a released lot, so it ships in the shortest window and arrives with that lot's certificate. Most buyers use it to run their own HPLC and MS, compare with the certificate and decide whether to scale. There is no obligation to continue, and no pressure to order more than one kit first.
Step two: a production batch
When a buyer scales, the quote names the compound, format, quantity and specification, and the batch runs for that order: synthesis, cleavage, purification, lyophilization, QC and documentation in sequence. Raw powder is supplied from 5 g, shipped cold-chain; vials keep the fixed unit of 1 kit = 10 vials. The certificate for that batch is shared before dispatch.
Step three: private-label repeats
Private-label OEM starts at 50 kits (500 vials) per artwork. Label text, carton and insert are proofed once, then repeat orders run in the longest window because printing and fill are added after release. Neutral labels are the default for everything else.
Custom sequences
Analogues not listed on this site can be synthesized to a buyer's sequence and specification, from 100 kits (1,000 vials), typically about 15 days after specification and payment confirmation. Ask on the RFQ; the reply says whether the sequence is feasible before anything is paid.
Batch evidence you can open before you pay
A certificate per lot, a public library of records, and one independent laboratory report.
The batch certificate
Each lot is released against a certificate of analysis that reports chromatographic purity by reversed-phase HPLC, molecular-weight identity by mass spectrometry, and three dates: manufactured, tested and retest. The lot alias on the certificate is printed on the carton and the vial label. The COA reading guide explains every field.
The public library
Pepti publishes batch records for the GLP-1 family on peptioem.com/coa, 76 entries across the catalogue as reviewed 2026-10-19. Each compound page here links the records for that compound, and the quality page tabulates the published purity ranges. Records are examples of the document format; the shipped lot has its own.
The independent report
Janoshik Analytical report #210105 identifies peptioem.com as client and manufacturer for a Retatrutide 20 mg sample and reports 19.52 mg content and 99.837% purity, analyzed 2026-10-07, verifiable at verify.janoshik.com. Sample-specific result for one submitted vial; it is not a claim about any other product or lot.
Why this site covers one family only
A narrow catalogue is easier to verify than a wide one.
GLP-1-family peptides are the most copied category in research-peptide supply. Clone sites borrow photographs, lot numbers and even laboratory reports from real manufacturers, then sell something else. The defence is not a longer catalogue; it is a short one where every claim can be traced: six compounds, one manufacturing site, one certificate format, one public library, one WhatsApp identity and one email domain.
Pepti runs its full research-peptide catalogue and private-label programme on peptioem.com. This site exists so that a buyer looking for GLP-1 raw material finds the specification, the records and the unit system without wading through hundreds of unrelated pages, and so that the GLP-1 pages can be kept at the depth this category needs.
What you will not find here: prices on the page, purity promises without a record behind them, drug-substance language, customer quotes, or links to other storefronts. What you will find: CAS numbers that match PubChem, molecular weights with their source, a lead-time ladder written as typical windows rather than commitments, and a boundary statement on every page saying what Pepti is not.
Pepti does not present itself as a cGMP drug-substance (API) manufacturer or CDMO and does not publish a GMP certificate or DMF.
Verify before you pay
A four-step routine that takes less time than a wire transfer.
- Match the entity. This site, the batch records on peptioem.com, the email domain and the WhatsApp account (Pepti Supply) all point to one manufacturer at one stated Guangzhou address. A supplier that cannot show that chain is not Pepti.
- Open a public record. Choose a lot on any compound page and read it on peptioem.com: compound, strength, lot alias, purity, identity and dates.
- Ask for the lot that ships. The quote should name the lot alias; the certificate for that lot is shared before payment and the alias reappears on the carton.
- Test a sample if your QA requires it. Order 1 kit (10 vials), send one vial to a laboratory of your choice, compare. The verification guide has the full routine and a red-flag table.
Working guides
Written from the release bench, not the sales desk.
Verify a GLP-1 raw material supplier
Entity, records, lot chain, independent test, red flags.
Read a GLP-1 COA field by field
Lot alias, three dates, HPLC purity, MS identity, what is missing.
HPLC purity vs MS identity
Two questions, two instruments, one certificate.
Raw powder vs lyophilized vials
Traceability, units, weighing, labels, lead time.
Storage, cold chain and retest dates
Receiving, logging, re-examination.
Check regulatory status from primary sources
FDA and Federal Register text, quoted, with verification dates.
Questions buyers ask
Who manufactures the material sold through this site?
Pepti, a peptide manufacturer at No. 18 Zhenliangyuan 2nd Road, Zhongluotan Town, Baiyun District, Guangzhou, China. PeptiGLP1 is Pepti's GLP-1 raw-material site; batch records are published on peptioem.com and the WhatsApp account is Pepti Supply. There is no trading company in between.
What is the smallest order?
1 kit (10 vials) of one compound and strength for lyophilized vials, or from 5 g, shipped cold-chain for raw powder. Private-label OEM starts at 50 kits (500 vials).
How long does an order take?
Typically 5–10 days for sample kits, 14–21 days for production batch, 21–28 days for oem repeat order. Lead times are typical ranges, not commitments; the applicable window is confirmed on each RFQ.
Which documents come with a lot?
A certificate of analysis for the lot with RP-HPLC purity, MS identity, manufacture date, test date and retest date, plus the chromatogram and spectrum on request. Public examples of the format are linked from each compound page.
Is this material for drug manufacturing?
No. For research use only. Not for human or veterinary use. Supply is limited to research organizations, laboratories and B2B buyers, and Pepti does not present itself as a cGMP drug-substance (API) manufacturer or CDMO and does not publish a GMP certificate or DMF.
Request a quote for GLP-1 raw material
Send the compound, format (raw powder or lyophilized vials), quantity and destination. Mike at Pepti Supply replies on WhatsApp with the applicable batch record, lead-time window and unit pricing; email works too: contact@peptioem.com.