CJC-1295 + Ipamorelin 20 Pen Specifications | Veyvora

This page covers three things UK laboratory researchers need before working with the CJC-1295 + Ipamorelin 20 pen: the verified device specifications, a step-by-step unit-conversion method, and the reconciliation procedure for matching the pen label against its batch certificate of analysis (COA). All materials and discussion are for laboratory and in-vitro research use only.

A CJC-1295 and ipamorelin research protocol, in a laboratory context, refers to a defined in-vitro workflow in which a calibrated multi-dose pen delivers fixed microgram quantities of two synthetic peptides, CJC-1295 (a DAC-modified GHRH analogue, molecular formula C₁₆₅H₂₆₉N₄₇O₄₆, MW ≈ 3647.2 g/mol) [2] and ipamorelin (a pentapeptide ghrelin mimetic, molecular formula C₃₈H₄₉N₉O₅, MW ≈ 711.8 g/mol) [3], for in-vitro laboratory research use only. Veyvora’s CJC-1295 + Ipamorelin 20 pen is specified as a 300-click device delivering 67 µg of combined peptide per click, giving a calculated total of approximately 20.1 mg across the full click count (Veyvora product documentation, 2026). No aspect of this documentation constitutes human-use guidance.

Key Takeaways

• The pen delivers 67 µg of combined CJC-1295 and ipamorelin per click across 300 clicks, yielding approximately 20.1 mg total; per-component quantities must be confirmed from the batch COA.
• CJC-1295 (MW ≈ 3647.2 g/mol) and ipamorelin (MW ≈ 711.8 g/mol) differ substantially in molecular weight, so a combined per-click mass figure alone is insufficient for molar calculations.
• Label values are nominal; base all bench calculations on the COA’s measured content and record any discrepancy in the methods section.
• Neither CJC-1295 nor ipamorelin holds marketing authorisation in the UK, EU or United States; all use is strictly in-vitro research.

CJC-1295 + Ipamorelin 20 Pen Specifications: Technical Scope

The CJC-1295 + Ipamorelin 20 pen is a label-derived laboratory specification, not a dosing guide. Its purpose is to supply a defined combined peptide mass, a fixed internal volume and a calibrated click mechanism so that researchers can translate pen clicks into microgram or milligram quantities for in-vitro bench work only.

CJC-1295 is a synthetic, DAC-modified growth-hormone-releasing hormone (GHRH) analogue with molecular formula C₁₆₅H₂₆₉N₄₇O₄₆ and molecular weight approximately 3647.2 g/mol [2]. Ipamorelin is a pentapeptide ghrelin mimetic with molecular formula C₃₈H₄₉N₉O₅ and molecular weight approximately 711.8 g/mol [3]. The two peptides carry substantially different molecular weights, so a combined per-click mass figure alone is insufficient for molar calculations; researchers must confirm the individual component quantities from the product’s dedicated page or its batch COA before attempting any conversion.

Veyvora’s product documentation (2026) specifies the pen as a 300-click multi-dose device delivering 67 µg of combined peptide per click, yielding a calculated total of approximately 20.1 mg across the full click count. Any values absent from the live product page or batch documents, including the per-component split between CJC-1295 and ipamorelin, require operator confirmation rather than inference from comparable pens.

For the receptor-level distinction between the two peptides, see Veyvora’s CJC-1295 versus ipamorelin explained comparison. The rationale for combining them in a single research preparation is covered in the CJC-1295 and ipamorelin research overview.

Verified Pen Specifications

Three primary specification values are available from Veyvora’s live structured data: click count, per-click mass and derived total. These figures are the starting point for any bench calculation; component-level quantities require separate confirmation from the batch COA.

Values Requiring Operator Confirmation

The per-component split between CJC-1295 and ipamorelin within each 67 µg click is not confirmed by the summary figures above. The internal cartridge volume and the concentration expressed as mg/mL are similarly absent from the summary specification; both must be confirmed from the dedicated product page or the batch COA before any molar or volumetric calculation proceeds. Where a label states a round total such as “20 mg”, treat that figure as a nominal convention and base calculations on the COA’s measured content value, documenting any discrepancy in the methods record.

Cross-reference the batch number against the accompanying certificate using Veyvora’s how to verify a batch against its COA procedure before interpreting any of these figures for bench work. What the HPLC (high-performance liquid chromatography) purity figure on that certificate does and does not confirm is covered separately at what HPLC purity does and does not prove.

Unit-Conversion Method

Converting a pen’s click count into molar quantities requires three sequential steps: confirm the per-click mass from the label or COA, divide each peptide’s confirmed mass by its molecular weight to obtain moles, then express the result in the units the experimental volume requires.

Step 1, Per-Click Mass

Veyvora’s documented specification for the CJC-1295 + Ipamorelin 20 pen is 67 µg of combined peptide per click across 300 clicks (Veyvora product documentation, 2026). That figure is a combined total, so the per-component mass for CJC-1295 and for ipamorelin must be confirmed separately from the product page or batch COA before any component-level calculation proceeds.

Step 2, Molar Conversion

CJC-1295 (DAC-modified GHRH analogue) carries a reported molecular weight of approximately 3647.2 g/mol and molecular formula C₁₆₅H₂₆₉N₄₇O₄₆ [2]. Ipamorelin carries a reported molecular weight of approximately 711.8 g/mol and molecular formula C₃₈H₄₉N₉O₅ [3]. Once the per-component µg value is confirmed from the batch COA, divide by the appropriate molecular weight to obtain moles per click.

Illustrative calculation only, do not use as a working quantity. A COA confirming 33.5 µg of ipamorelin per click would yield: 33.5 µg ÷ 711.8 g/mol = 47.1 nmol per click. Substitute the confirmed figure from the actual batch document; the figure above is a dimensional example only.

Step 3, Expressing Molarity in the Experimental Volume

Divide the nmol-per-click value by the volume of reconstitution buffer or assay medium (in litres) to express the result as a molar concentration. Record all intermediate values, per-component µg from COA, molecular weight source and citation, reconstitution volume in mL, in the methods section so the calculation is reproducible from the batch COA alone.

Veyvora’s reference conversion for the pen equates 8 clicks to 0.5 mg and 4 clicks to 0.25 mg of combined material at 67 µg per click; these are dimensional checks on the click mechanism, not per-component quantities or research schedules (Veyvora, 2026). Consult storage and stability guidance before preparing any working solution.

Label and Batch-Document Reconciliation

Reconciling the pen label against the accompanying COA is the first step before any calculation with a CJC-1295 + Ipamorelin 20 pen. The label states the marketed format, total peptide mass, internal volume and click count, while the batch COA records the measured values for that specific lot, including purity by HPLC, filled mass and, where documented, per-component content. These two documents must agree within stated tolerances before any derived figure enters a laboratory calculation.

Checking for Discrepancies

Where the labelled total mass and the COA’s measured content differ, base all calculations on the COA value and record the labelled figure as a nominal reference in the methods section. For the Veyvora CJC-1295 + Ipamorelin 20 pen specifically, the internal volume, click count and per-component quantities must be taken from the live product page and the batch-specific COA; values from other suppliers’ pens or other Veyvora formats must not be substituted.

Where the blend ratio, for example, whether CJC-1295 and ipamorelin are present in equal or unequal proportions, is not stated explicitly on either document, flag that figure as unconfirmed and obtain it directly from Veyvora before attempting component-level molar conversions.

Supplier COAs confirm identity, purity and content for a given batch; they do not constitute pharmacopoeial certification or regulatory approval [4]. For the receptor-level context that explains why the two peptides are paired in research settings, see CJC-1295 versus ipamorelin explained.

Measurement Limits and Error Checks

Per-click delivery from a multi-dose research pen is a calibrated estimate, not a guaranteed exact mass. Mechanical tolerances, pen wear, partial priming and trapped air bubbles can each cause systematic under- or over-delivery relative to the nominal per-click figure. Because per-click masses for combined CJC-1295 and ipamorelin pens sit in the low-microgram range, even small mechanical variation represents a meaningful proportion of the intended quantity.

Rounding and Unit Mismatches

Nominal per-click values are frequently rounded for label clarity. A pen documented as delivering 67 µg per click may reflect a calculated figure of 66.7 µg (20,000 µg ÷ 300 clicks); applying the rounded figure across all 300 clicks accumulates a discrepancy of approximately 90 µg against the labelled total. Record the unrounded figure in the methods section and cross-check: 300 clicks that do not exhaust a pen whose label states a fixed total mass indicate that the rounding assumption requires revision.

Unit mismatches, most commonly µg versus mg, are a separate source of arithmetic error. Verify that every value in a calculation chain uses consistent SI units and that the molecular weight source is cited by year and database entry [2][3].

When Not to Transfer a Value from Another Product

A specification confirmed for one pen format must not be substituted for another. Veyvora’s Tesamorelin 20 pen and the CJC-1295 + Ipamorelin 20 pen share a similar naming convention but are distinct products with distinct fill volumes, peptide masses and blend ratios. Per-click values from third-party suppliers’ blended pens must not be applied to Veyvora’s product. Where a required value is absent from the live product page or batch COA, mark it as [unverified, confirm with supplier] rather than substituting an analogous figure.

For the procedure to match a batch number against its certificate before interpreting any derived quantity, see how to verify a batch against its COA. For the distinction between HPLC purity, identity confirmation and concentration measurement, three analytically separate claims, see what HPLC purity does and does not prove.

Research-Use-Only Limitations

CJC-1295 and ipamorelin are not authorised medicinal products in the UK, EU or United States. As of their 2024 regulatory publications, neither the MHRA (Medicines and Healthcare products Regulatory Agency), EMA (European Medicines Agency) nor FDA (Food and Drug Administration) has granted marketing authorisation for either peptide as a human medicine [1][4]. CJC-1295 remains an investigational GHRH analogue whose clinical development was discontinued at Phase 2; ipamorelin is classified as a growth hormone secretagogue without current marketing authorisation [4]. All Veyvora CJC-1295 + Ipamorelin 20 pen materials, specifications and batch documentation discussed on this page are strictly for laboratory and in-vitro research use only.

What a Supplier COA Does and Does Not Confirm

A batch COA from Veyvora confirms identity, purity and peptide content for that specific lot. The document does not constitute pharmacopoeial certification and does not substitute for MHRA, EMA, USP (United States Pharmacopeia) or ICH (International Council for Harmonisation) approval. Treat supplier COAs as internal quality documents, not as regulatory authorisation.

Regulatory and Procurement Context for UK Researchers

Researchers and prospective distributors in the UK should be aware that handling and advertising unlicensed peptide pens may fall within MHRA and ASA (Advertising Standards Authority) positions on borderline products. Those positions change; current legal advice specific to the intended use is required rather than reliance on historical practice.

This page contains no human dosing, titration, timing, cycling or outcome guidance. Any language in external sources that presents CJC-1295 + ipamorelin quantities as human-use instructions falls outside the scope of this article and must not be applied to bench-top work without independent regulatory review.

To inspect the full range of documented research peptides available from Veyvora, visit the Veyvora research-peptide catalogue and cross-reference each product’s live page against its batch certificate before committing to a procurement decision. For correct cold-chain receipt and storage conditions applicable to this pen format, consult Veyvora’s storage and stability guidance.

Sources

[1] downloads.regulations.gov, https://downloads.regulations.gov/FDA-2024-N-4777-0002/attachment_7.pdf [2] CJC-1295 (CID 91971820), C165H269N47O46 — PubChem, pubchem.ncbi.nlm.nih.gov, https://pubchem.ncbi.nlm.nih.gov/compound/91971820 [3] Ipamorelin (CID 9831659), C38H49N9O5 — PubChem, pubchem.ncbi.nlm.nih.gov, https://pubchem.ncbi.nlm.nih.gov/compound/9831659 [4] fda.gov, https://www.fda.gov/media/183819/download