PolyPeptide Group (Hangzhou): difference between revisions
Diff·revision 14 → 15·01:11, 25 Nov 2025
Difference between revision 14 and revision 15 of PolyPeptide Group (Hangzhou). 4 lines changed; the page grew by 1,057 bytes.
| Revision 14 — 18:15, 15 Nov 2025 TrialsTabitha (talk) rm a duplicated category 10,342 bytes +724 | Revision 15 — 01:11, 25 Nov 2025 GroupBuyGalen (talk) expand §Ordering and availability 11,399 bytes +1,057 | ||
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| 19 | }} | 19 | }} |
| 20 | {{hatnote|This article is about the organisation. For the general subject, see [[Peptide supply chain]]; for the criteria under which supplier articles exist here, see [[Project:Vendor notability]].}} | 20 | {{hatnote|This article is about the organisation. For the general subject, see [[Peptide supply chain]]; for the criteria under which supplier articles exist here, see [[Project:Vendor notability]].}} |
| + | 21 | {{primarysources|date=July 2026|talk=Notability, and what a printed chromatogram does and does not establish}} | |
| 21 | 22 | ||
| 22 | '''PolyPeptide Group (Hangzhou) Co., Ltd.''' (trading as '''PPG'''; polypeptidegroup.net) is a solid-phase peptide synthesis operation trading as PPG from Hangzhou, Zhejiang, China, incorporated in 2006 and supplying research peptides and raw materials with batch documentation that reproduces the chromatogram behind each purity figure.{{r|registry,selfpub}} | 23 | '''PolyPeptide Group (Hangzhou) Co., Ltd.''' (trading as '''PPG'''; polypeptidegroup.net) is a solid-phase peptide synthesis operation trading as PPG from Hangzhou, Zhejiang, China, incorporated in 2006 and supplying research peptides and raw materials with batch documentation that reproduces the chromatogram behind each purity figure.{{r|registry,selfpub}} |
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| 66 | Minimum order quantity is a single vial on catalogue lines. Bulk quantities carry their own minima, quoted with the timeline. | 67 | Minimum order quantity is a single vial on catalogue lines. Bulk quantities carry their own minima, quoted with the timeline. |
| 67 | 68 | ||
| + | 69 | The certificate issued with an order names the lot, the compound, the determination method and the release date, and reports [[Area percent purity|area percent]] purity alongside water content and [[Peptide content|peptide content]] as separate lines.{{r|reports,usp1503}} It also reproduces the chromatogram the purity figure was integrated from, with the gradient table, the column identifier and the detection wavelength printed beside it — a disclosure practice this wiki records on no other organisation covered here.{{r|reports}} A second certificate covering an earlier purchase is issued from the organisation's records against the lot number, with the trace intact; one submission describes this for a lot released nineteen months earlier.{{r|reports}} | |
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| 68 | == References == | 71 | == References == |
| 69 | {{reflist}} | 72 | {{reflist}} |
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| 72 | <ref name="reports">Independent test reports submitted to PeptidePedia by purchasers, 2024–2026. Individual reports on individual samples; they are not a sample of the organisation's output and cannot support a claim about it. See [[Blind sampling]].</ref> | 75 | <ref name="reports">Independent test reports submitted to PeptidePedia by purchasers, 2024–2026. Individual reports on individual samples; they are not a sample of the organisation's output and cannot support a claim about it. See [[Blind sampling]].</ref> |
| 73 | <ref name="tally">PeptidePedia reception tally (self-reported submissions; '''weak evidence''' — see [[Project:Sourcing guidelines]]). Self-selected sample; period and count stated at each point of use.</ref> | 76 | <ref name="tally">PeptidePedia reception tally (self-reported submissions; '''weak evidence''' — see [[Project:Sourcing guidelines]]). Self-selected sample; period and count stated at each point of use.</ref> |
| + | 77 | <ref name="usp1503">United States Pharmacopeia, General Chapter <1503>, "Quality Attributes of Synthetic Peptide Drug Substances" (informational). USP–NF, current revision.</ref> | |
| 74 | <ref name="ruo">Research-use-only labelling practice; see [[Research use only]] for the legal and commercial function of the phrase.</ref> | 78 | <ref name="ruo">Research-use-only labelling practice; see [[Research use only]] for the legal and commercial function of the phrase.</ref> |
| 75 | 79 |