Title: Almagate
CAS Registry Number: 66827-12-1
CAS Name: [Carbonato(2)]heptahydroxy(aluminum)trimagnesium dihydrate
Additional Names: carbonic acid, aluminum-magnesium complex
Trademarks: Almax (Almirall)
Molecular Formula: C2H14Al2Mg6O20.4H2O
Molecular Weight: 629.97
Percent Composition: C 3.81%, H 3.52%, Al 8.57%, Mg 23.15%, O 60.95%
Line Formula: Al2Mg6(OH)14(CO3)2.4H2O
Literature References: A crystalline hydrated aluminum-magnesium hydroxycarbonate. Prepn: R. G. W. Spickett et al., BE 873843; eidem, US 4447417 (1979, 1984 both to Anphar). Crystal structure: J. Moragues et al., Arzneim.-Forsch. 34, 1346 (1984). pH curves, acid consuming capacity: J. E. Beneyto et al., ibid. 1350. Effect of proteolytic enzymes, polypeptides: J. E. Beneyto, J. L. Fábregas, ibid. 1357. Serum levels of magnesium, aluminum not increased by high doses of almagate: J. Jauregui, J. Segura, ibid. 1364. Pharmacology: P. R. Beckett et al., ibid. 1367. Clinical trials: A. Suau et al., ibid. 1380.
Properties: Dehydrates at 510 K. USP acid neutralization capacity 28.3 mEq HCl/g.
Therap-Cat: Antacid.
Keywords: Antacid.
Alminoprofen Almond, Bitter Almond, Sweet Almotriptan Aloe-Emodin

Clinical data
AHFS/ International Drug Names
Legal status  ?
Routes Oral
CAS number 66827-12-1
ATC code A02AD03
PubChem CID 71749
ChemSpider 64792 YesY
UNII 568Z59H7ZJ YesY
KEGG D02821 YesY
Chemical data
Formula Al2Mg6(OH)14(CO3)2 · 4 H2O
Mol. mass 314.99 g/mol
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Almagate (trade name Almax) is an aluminium- and magnesium-containing antacid. It was first described in 1984.[1][2]