Загадки от Ivan110

[tapira1]

ACS journals have CAS info at the end ot the articles. It seems that the CAS # is not readily available in Goog

[Ivan110]

Google have this number, I checked...

[Upstream]

I could find ref related to N"e"-tert-Butoxycarbonyl-L-lysin, Cu-salt in two journals

Moreover, the 3 earlier relevant papers that I'm aware of were also published in non-ACS journals (Int.J.Pept.Prot.Res., Synthesis & Synthetic Communications).
To sum up, the problem could not be solved in terms of either background experience, or brainstorming...
The only cure is full access to CAS database.
You're a big teaser, Ivan!
This time I was not as lucky as you're with Google. Normally, it responds correctly to brutto formula - but not in this case.

[comby1]

51320-80-0

[tapira1]

51320-80-0
pubs.acs.org/doi/abs/10.1021/jm00359a004
PK Chakravarty - 1983 (as hinted above).
Now let's see the quiz for # 14... perhaps with a more ubiquitous answer...

[LEDI]

Спасибо, Ivan110!
to Upstream, comby1, tapira1

[Biginelli]

спасибо!!!

[vitaki]

comby1, tapira1, БРАВО!!!

[Barium]

Сфотографирую переулок в Луганске, пароль к архиву - его название в переводе на староджунгарский.

[alex volker]

Ну хоть на какую букву начинается?
Про остров...
Ааа... опоздал, отгадали уже...

[MOL2nik]

[bromin]

Жесть!

[y9td]

how to use this database?

[anomer]

Пароль: Silhouette