GL Biochem (Shanghai): difference between revisions
Diff·revision 35 → 36·03:05, 27 Dec 2024
Difference between revision 35 and revision 36 of GL Biochem (Shanghai). 5 lines changed; the page grew by 739 bytes.
| Revision 35 — 01:49, 19 Dec 2024 EndotoxinEd (talk) split overlong sentence 7,785 bytes ±0 | Revision 36 — 03:05, 27 Dec 2024 SPPS_Sorrel (talk) correct transposed digits 8,524 bytes +739 | ||
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| 51 | The presence of amino acid derivatives, resins and coupling reagents in the catalogue is what most clearly places the organisation upstream: those are what a synthesis laboratory buys, not what a research-compound purchaser buys.{{r|selfpub}} | 51 | The presence of amino acid derivatives, resins and coupling reagents in the catalogue is what most clearly places the organisation upstream: those are what a synthesis laboratory buys, not what a research-compound purchaser buys.{{r|selfpub}} |
| 52 | 52 | ||
| + | 53 | == Independent testing record == | |
| + | 54 | Reports submitted to this wiki on GL Biochem material are fewer in number than for the large retail suppliers but more complete in content, typically including mass confirmation and, in several cases, amino acid analysis alongside a purity figure.{{r|reports}} | |
| + | 55 | ||
| + | 56 | Amino acid analysis is the technique that establishes [[Peptide content|peptide content]] as a mass fraction rather than inferring it, and its presence on a certificate answers the question that a purity figure alone leaves open.{{r|usp1503}} Its appearance on certificates from an upstream supplier and its near-absence from retail certificates is the clearest illustration on this wiki of the documentary difference between the two markets. | |
| + | 57 | ||
| 53 | == References == | 58 | == References == |
| 54 | {{reflist}} | 59 | {{reflist}} |