用于瑞他特鲁肽的醋酸BAC水

[chickenhunter]

大家好，我需要一些指导。

我住的地方不太容易找到BAC水。

我弄到了ZPHC牌子的BAC水，成分是

0.9%苯甲醇和

0.6%醋酸。

我想服用20单位的瑞他曲肽。请问服用这种水可以吗？

 

[woundcarping]

我打算服用20单位的瑞他曲肽。可以服用吗？

这并非用于计量Reta剂量的单位。0.9

%BA/0.6%AA溶液的pH值似乎在Reta稳定的预期范围内。

 

[chickenhunter]

您好。

我将用3毫升这种抑菌水溶解一瓶30毫克的药片。浓度为10毫克/毫升，或每10个单位含1毫克。

我将注射20个单位以获得2毫克的剂量。

谢谢您的建议。

 

[PopTart]

您好。

我将用3毫升这种抑菌水溶解一瓶30毫克的药片。浓度为10毫克/毫升，或每10个单位含1毫克。

我将注射20个单位以获得2毫克的剂量。

谢谢您的建议。

我无法回答你最初的问题，但还是要为你分享的数学知识点个赞！

 

[woundcarping]

您好。

我将用3毫升这种抑菌水溶解一瓶30毫克的药片。浓度为10毫克/毫升，或每10个单位含1毫克。

我将注射20个单位以获得2毫克的剂量。

谢谢您的建议。

试验中提到的典型起始剂量为 2 毫克 Reta。

 

[chickenhunter]

试验中提到的典型起始剂量为 2 毫克 Reta。

谢谢，我已经用了两个月了。我担心的是抑菌水。考虑到它含有醋酸，注射可以吗？

 

[Chili777]

Gemini公司不赞成这样做：“醋酸会改变瑞他曲肽的pH值和稳定性，可能导致其降解并降低疗效。” 我也没看到任何相关的研究。你自己决定吧。

 

[woundcarping]

Gemini公司不赞成这样做：“醋酸会改变瑞他曲肽的pH值和稳定性，可能导致其降解并降低疗效。” 我也没看到任何相关的研究。你自己决定吧。

询问 Reta 的 pH 范围是多少，以及 .9%BA/.6%AA 的范围是多少。

 

[Chili777]

询问 Reta 的 pH 范围是多少，以及 .9%BA/.6%AA 的范围是多少。

You got it:

Q: What is the pH range for peptide Retatrutide and what is the range for .9%BA/.6% acetic acid BAC water. Is retatrutide compatible with AA as a reconstitution agent?

A: For peptides like Retatrutide, selecting the right reconstitution agent is a balance between maintaining chemical stability and ensuring solubility. Here is the breakdown of the pH ranges and compatibility factors you requested.

1. pH Range for Peptide Retatrutide

Retatrutide is a triple-agonist peptide (GLP-1, GIP, and glucagon receptors) that includes a fatty-acid (C20 diacid) side chain.

* Optimal Stability pH: Most acylated peptides in this class are most stable in a slightly acidic to neutral range, typically pH 5.0 to 7.0.

* Isoelectric Point (pI): While the exact pI can vary based on the specific salt form (often sold as a sodium salt), the calculated pI for the Retatrutide sequence is generally in the 5.4 to 6.0 range.

* Solubility Note: Because it is an acylated peptide, Retatrutide relies on the deprotonation of its acidic groups (like the fatty acid tail) to stay soluble. In environments where the pH is significantly lower than its pI, the peptide is more likely to aggregate or "gel."

2. pH Range for .9% BA / .6% Acetic Acid BAC Water

Bacteriostatic water containing 0.6% acetic acid is significantly more acidic than standard BAC water.

* pH Level: A 0.6% acetic acid solution (approximately 0.1\text{ M}) has a pH of roughly 2.8 to 3.0.

* Composition: The 0.9% Benzyl Alcohol (BA) acts as a preservative but has a negligible effect on the final pH compared to the acetic acid.

* Calculated Acidity: Using the formula for a weak acid:

With a pK_a of 4.76 and a concentration of 0.1\text{ M}, the resulting pH is approximately 2.88.

3. Compatibility: Retatrutide and Acetic Acid (AA)

Technically, you can dissolve many peptides in acetic acid, but for Retatrutide, it is generally not recommended as the primary choice for the following reasons:

| Factor | Standard BAC Water (pH 5-7) | 0.6% Acetic Acid (pH 2.9) |

|---|---|---|

| Solubility | High (especially for sodium salt forms). | Risk of "gelling" due to protonation of the fatty acid tail. |

| Stability | Excellent for long-term storage (cold). | Higher risk of acid-catalyzed hydrolysis over time. |

| Comfort | Minimal sensation upon injection. | High "sting" factor; pH 3.0 is quite painful for subcutaneous use. |

| Necessity | Usually the intended diluent. | Only used for highly basic peptides or those prone to severe aggregation. |

The Verdict: While Retatrutide is "compatible" in that it won't immediately vanish, 0.6% Acetic Acid is overkill. Standard Bacteriostatic Water (0.9% BA) is the industry standard for Retatrutide. The acetic acid variant is typically reserved for peptides like IGF-1 LR3 or certain GH fragments that are notoriously difficult to keep in solution.

Caution: Using a highly acidic diluent for a peptide that doesn't require it can lead to localized tissue irritation and may alter the absorption kinetics of the acylated peptide.

 

[chickenhunter]

looks like the consensus is that its better to wait for bac water