EC 1.1.1.88     
Accepted name: hydroxymethylglutaryl-CoA reductase
Reaction: (R)-mevalonate + CoA + 2 NAD+ = 3-hydroxy-3-methylglutaryl-CoA + 2 NADH + 2 H+
Other name(s): β-hydroxy-β-methylglutaryl coenzyme A reductase (ambiguous); β-hydroxy-β-methylglutaryl CoA-reductase (ambiguous); 3-hydroxy-3-methylglutaryl coenzyme A reductase (ambiguous); hydroxymethylglutaryl coenzyme A reductase (ambiguous)
Systematic name: (R)-mevalonate:NAD+ oxidoreductase (CoA-acylating)
References:
1.  Fimognari, G.M. and Rodwell, V.W. Substrate-competitive inhibition of bacterial mevalonate:nicotinamide-adenine dinucleotide oxidoreductase (acylating CoA). Biochemistry 4 (1965) 2086–2090.
[EC 1.1.1.88 created 1972, modified 2002]