Company Overview
The site states that Biosyntan GmbH operates as a scientific service company founded in 1997, focusing on the custom synthesis of peptides. The company's offerings are aimed at researchers requiring standard or modified peptides, including fluorescently labeled options and post-translationally modified compounds. The website publishes detailed technical specifications covering standard peptides, special building blocks, and related services such as antibodies and immunogenic peptides.
According to the terms and conditions, products are analyzed via HPLC and mass spectrometry, with quantity and purity guaranteed according to product data sheets. Orders can be submitted via email, post, fax, or online, with shipping costs applicable outside of Germany. Buyers must contact the company directly for price quotes, as pricing is unstated on the website.
Pros
- Offers custom peptide synthesis up to 100 residues.
- Analyzes all products by HPLC and mass spectrometry.
- Provides free shipping within Germany.
Considerations
- Public pricing is unstated on the website.
- Shipping costs apply to international orders outside of Germany.
- Third-party testing laboratory names are unstated.
Score Breakdown
Not currently ranked. We hold suppliers out of the numbered rankings until enough of the rubric has been verified, so that missing information can never work in a supplier's favour:
- overall evidence coverage 41% (needs 60%)
- Testing & Documentation 11% verified (needs 60%)
- Wholesale Capabilities 39% verified (needs 60%)
The dimension scores below reflect only what we were able to verify.
Overall score is calculated from these seven dimensions using the house weighting, and each dimension is calculated from the verified criteria beneath it. Open a dimension to see every criterion, its verified state, the source it was verified from and the date it was checked. Comparison pages may re-weight the dimensions for buyer intent.
Testing & Documentation 25%
Not assessed
- ?Independent third-party testingNot confirmed
- ?Batch-specific certificates of analysisNot confirmed
- ?COAs publicly accessibleNot confirmed
- ?HPLC purity results publishedNot confirmed
- ✓Mass spectrometry / identity verificationSource: biosyntan.de/standard-peptides/synthesis-of-standard… · checked 2026-09-08Verified
- ?Testing laboratory named or identifiableNot confirmed
- ?Lot / batch traceabilityNot confirmed
- ?Documentation package available to wholesale buyersNot confirmed
Too little of this dimension could be verified to publish a score, so it is excluded from the overall and the other weights are rebalanced.
Business Transparency 20%
10.0
16 of 16 verified points met → 10.0/10. Items shown as not confirmed are excluded from both sides of that calculation.
Wholesale Capabilities 15%
Not assessed
Too little of this dimension could be verified to publish a score, so it is excluded from the overall and the other weights are rebalanced.
Manufacturing Capabilities 15%
10.0
12 of 12 verified points met → 10.0/10. Items shown as not confirmed are excluded from both sides of that calculation.
Commercial Purchasing 10%
Not assessed
- ?Business account application or approvalNot confirmed
- ?Quotes and purchase orders supportedNot confirmed
- ?Account-level or contract pricingNot confirmed
- ?Multiple business payment methodsNot confirmed
- ?Formal invoicing and documentationNot confirmed
- ?Named contact or account managerNot confirmed
- ?Repeat-order or standing-order supportNot confirmed
- ?Payment terms available to approved accountsNot confirmed
Too little of this dimension could be verified to publish a score, so it is excluded from the overall and the other weights are rebalanced.
Fulfillment & Logistics 10%
Not assessed
- ?Domestic shipping with stated timeframesNot confirmed
- ✓International shippingSource: biosyntan.de/about-biosyntan/terms-conditions-agb-te… · checked 2026-09-08Verified
- ?Cold-chain or temperature-controlled shippingNot confirmed
- ?Lead times publishedNot confirmed
- ?Order tracking providedNot confirmed
- ?Stock or availability visible before orderingNot confirmed
- ?Stated packaging and handling standardsNot confirmed
- ✓Documented returns or discrepancy processSource: biosyntan.de/about-biosyntan/terms-conditions-agb-te… · checked 2026-09-08Verified
Too little of this dimension could be verified to publish a score, so it is excluded from the overall and the other weights are rebalanced.
Website / Buyer Experience 5%
7.8
7 of 9 verified points met → 7.8/10. Items shown as not confirmed are excluded from both sides of that calculation.
Rubric score 9.7 across the 41% of the rubric verified so far, adjusted for evidence coverage to a published score of 8.1. How this is calculated
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