Did you read this: Post 428436 (https://www.thevespiary.org/talk/index.php?topic=13031.msg42843600#msg42843600)
(GC_MS: "Indole alkaloids among varieties of Ipomoea etc", Tryptamine Chemistry) ?
http://hazard.com/msds/gn.cgi?query=tartaric+acid&whole=whole&start=0 (http://hazard.com/msds/gn.cgi?query=tartaric+acid&whole=whole&start=0)
If I remember correct you need the D(-)-Tartaric acid (unnatural tartaric acid), 99% to get to what you want.
Thus you have to dive in the Fisher Scientific website, because that link doesn't work, Search there with that CAS nr 147-71-7 :
http://207.164.47.67/catalog/en/Default.asp?cat=ChemicalDry%2DOrganicNon%2DGraded&expand=True#ChemicalDry-OrganicNon-Graded (http://207.164.47.67/catalog/en/Default.asp?cat=ChemicalDry%2DOrganicNon%2DGraded&expand=True#ChemicalDry-OrganicNon-Graded)
(put 147-71-7 in the search window),
and take f.ex. the 25 gram unit:
http://207.164.47.67/catalog/en/Default.asp?CatNo=AC137860250 (http://207.164.47.67/catalog/en/Default.asp?CatNo=AC137860250)
(put that catno AC137860250 in the search window if you just only clicked this link, instead of follow the procedure, Fisher doesn't link through from outside links),
Then you click the blue MSDS icon:
And find that it's Synonym is:
D-(-)-Dihydroxysuccinic acid
and its PHYSICAL AND CHEMICAL PROPERTIES:
Physical State: Solid
Color: white
Freezing/Melting Point: 172 - 174 °C
Solubility in water: 1366 G/L IN WATER (22°C)
Molecular Formula: C4H6O6
Molecular Weight: 150.09
To get to this all, I used my new sticky thread up there, "©HIVE® Laboratory Safety & Data Sheets" and scrolled to the M section, and clicked the MSDS (Material Safety Data Sheets) link, then typed in tartaric acid and "hit the road, man".
So in the future you all can do this too, for ANY chemicals mentioned here, I expect you to do this!
No more lazy questions, no excuses, my dear students. LT/ :)