Enoch in Alexandrinus?

The answer is no.

The question is: does Codex Alexandrinus contain the book of Enoch?

I just received the new Introduction to the Septuagint from Baylor UP, edited by Siegfried Kreuzer, a translation of the German published in 2016. Kreuzer starts with a long introduction (pp. 3–56) on "The Origins and Transmission of the Septuagint."

I was surprised by this statement:

...the Codex Alexandrinus also contains the book of Enoch. (p. 20)

For anyone who knows anything about the transmission of the Enoch materials, this statement is obviously wrong. There is no such thing as "the book of Enoch" in Greek, if we mean by that term what we usually mean by "the book of Enoch" = 1 Enoch. That composite work exists (or, let us say, is attested) only in Ethiopic. (Ancient Christians did sometimes refer to a "book of Enoch," but they weren't talking about the composite work 1 Enoch.) So, at least it's careless wording. But also I didn't remember that any of the individual Enoch booklets appeared in the fifth-century Codex Alexandrinus. So I turned to ch. 6 of this very handy book, which contains a list of the contents of Codex Alexandrinus, and confirmed that Enoch appears nowhere in the manuscript. 

Kreuzer's footnote attached to the above-quoted sentence reads, in part:

... in the edition by Swete, which adheres strictly to the Codex Vaticanus ... [he has placed at the end some material from Codex Alexandrinus]; as a result, the Wisdom of Solomon, Enoch, and the Odes can also be found there. (pp. 20–21n56)

 What to make of that?

Of course, Wisdom of Solomon does appear in Codex Vaticanus, so there would be no reason for Swete to take it from Alexandrinus. Kreuzer means the Psalms of Solomon, which does appear at the end of Swete's edition, in an appendix.

Now, in the first edition of Swete's edition (vol. 3, 1894), Enoch is nowhwere. After 1–4 Maccabees (taken from Alexandrinus because of their absence from Vaticanus), there is bonus material: Psalms of Solomon (p. 765, taken from a minuscule) and the Odes (taken from Alexandrinus).

In the second edition of Swete (vol. 3, 1899), the bonus material now includes Enoch in between the Psalms of Solomon and the Odes (which held true for subsequent editions). But Enoch is not taken from Alexandrinus, which contains no Enoch material. Swete explains on p. xvii where he got the text from: Codex Panopolitanus (= Akhmim Manuscript) and a few other sources.

I wonder if the confusion arose from an earlier statement by Swete (p. vi), introducing the bonus material at the end of the volume.

The Books of Maccabees are followed by three collections which, if they cannot in strictness be said to belong to the Greek Old Testament, have some peculiar claims to a place at the close of the Alexandrian Bible. 

By "Alexandrian Bible," Swete meant the Septuagint, not Codex Alexandrinus, but perhaps someone misunderstood?

I also wonder whether the same problems—the attribution of Enoch to Codex Alexandrinus and the confusion of Wisdom of Solomon with Psalms of Solomon—appear in the German edition. I do not have access to it to check.

I do appreciate this introduction by Kreuzer. I might have some more to say about it later.