I would trust the potency to not be a problem for the duration of the typical manufacturer recommendation of 3 years. That is if you follow storage instructions (cool, dark, and dry). Light and heat will especially be problems for decomposing estradiol esters. You can take the powder sublingually but you have to measure out 2 mg daily and make sure to get this extremely small amount under your tongue. If injections are a problem, you could get 17-beta-estradiol and make a gel that you just apply to your skin once or twice daily. Here’s a guide for that https://groups.io/g/MTFHRT/wiki/30843

You can accomplish a lot with chemistry and determination! Unfortunately to do all this testing you have to have access to some pricey instruments. The UPLC was around $50,000 and the GC-MS was well over $100,000. But I’m willing to risk my job to make sure I know what I’m injecting into my butt

Great idea! I’ll do that!

Thank you so much!

Absolutely!

Thanks for the resource!

Once in solution you can store in a cool, dry, dark place and it should be good for 3 years. Powder should be stable for a lot longer though

I don’t see anything identifiable. Thanks for looking out though!

I was considering bica but the cost of AAs is a limiting factor for me. For me, maintaining a functioning penis is important, so I don’t think spiro is ideal. I figured the injections will give high enough E levels to naturally lower T. Is the 3-6 months spiro recommended for someone in my situation— wanting to maintain penis size and function?

Just one sample haha. Was trying to do it quick to not to get fired. I’m not too worried about problems with homogeneity since the powder appeared to be that of a pure compound (fine, white powder).

Glad you liked it! Yeah, most labs don’t use GC-MS for quality assurance because they know what they’re making, but it’s such a good instrument for identifying unknown compounds!

Yeah, I didn’t like the attitude of the wiki writer either but there’s some good info there. I’ve heard you don’t need an AA when you’re doing injections, what is your experience with this?

Maybe I’ll cut my dose down then. This is my first time doing HRT so i don’t have any personal experience. I’ve seen studies for 10 mg every 14 days returning peak E2 levels of 300+

Thanks! I don’t have access to an autoclave but tbh you don’t really need to even boil them. The benzyl alcohol will kill anything in the solution except the endospores. The autoclave kills bacterial spores IIRC from my microbiology course, but the risk is very low for IM injections (not an expert on this so look into it further if you’re worried). Boiling will NOT kill endospores, so IMO, there’s no difference between boiling and just using benzyl alcohol.