No 2C-B and DOB for instance both turn bright yellow / green with a marquis reagent home test. They are much too similar to distinguish like that. I take it you can't bring it to the lab for testing? Don't know if thats possible in any country outside of where I live... You are mentioning it yourself, if its available then go for it, they should be able to tell you if they have a reference.
Ecstacy data sites / Dance safe couldn't tell you a thing! Its all same looking powders, in what possible way do you think they could be of assistance?
If and only if you have a very accurate (mg) scale you could make a solution of say 50 mg of each - label the solutions at least A, B, C, D, E - then you could just test a very tiny amount of one (say A), check the liquid measurement thread for info how to make a correct 1 mg / ml solution and how to accurately measure.
Start with an amount of solution that contains like 0,5 mg. then do 1,0 mg. If you still don't notice anything at all do 2,0. All of this on separate days just to be sure that you don't suddenly get an effect or anything. Go up as carefully as I say, if you arrive at like 5 mg and still nothing then it must be a 2C-X. Then skip to 10 mg then to 15 mg. Try to deduct from the effects which one it may be and otherwise just enjoy the effects not knowing which it is. Just call it 'A' and know close enough that it is a 2C-X which are quite similar in ways anyway.
If you do get an effect at 1 or 2 mg then its a DOX, same story.
In terms of harm reduction this is not ideal, but if you turn out to have no way at all to analyse what it is AND you are SURE that it is only one of those you mention, certain that its a 2C-X or a DOX then I can't think of anything going wrong as long as you don't increase the dose in too big steps. Also make sure you have the day free on every test since it could be a DOX which last a hell of a long time.
Actually titrating (as this is called) appears safer to me than doing a marquis test and judging by the color which one it is. If the colors are quite close together then you would be taking a huge risk assuming something is a 2C-X and dosing accordingly. If you are wrong and it is a DOX then you are in fucking serious trouble do you understand?
Like many people, if you cant analyse then you would still think its a waste just to throw everything away. Many people insist that there must be a way, their interest is just very big. That is why I tell you that if you really must then titrating your dose slowly and testing your reaction is possible.
If you make too big steps in the doses then the resulting reaction could very well be more than you bargained for.
Be careful and read up on the subject, like the basics of getting a scale if you dont have one, the dangers, how to make solutions (they should contain alcohol as a preservative and for solubility), etc.
If you have any doubt in your mind at any point, come back here and don't continue. You don't want to poison yourself.
Good luck. And welcome to bluelight
![:\](https://bluelight.org/xf/BL_Images/Orig_Emoji/wrygrin.gif "wry grin :\")
