5-hydroxy-3-methoxy-2-methyl-[1,4]benzoquinone, also known as methylhydroxyeugenol or methylvanillin, is a naturally occurring organic compound belonging to the class of benzoquinones. It is a yellow crystalline solid with a molecular formula of C9H10O4 and a molecular weight of 182.18 g/mol. 5-hydroxy-3-methoxy-2-methyl-[1,4]benzoquinone is derived from the oxidation of the naturally occurring phenolic compound eugenol, which is found in various plants, particularly in the essential oils of cloves, cinnamon, and bay leaves. Methylhydroxyeugenol exhibits antioxidant properties and is used as a synthetic flavoring agent, providing a sweet, vanilla-like taste. It is also employed as a precursor in the synthesis of vanillin, the primary component responsible for the flavor of vanilla. Due to its potential health risks, its use in food products is regulated in many countries.
The CAS Registry Mumber 5691-50-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,9 and 1 respectively; the second part has 2 digits, 5 and 0 respectively. Calculate Digit Verification of CAS Registry Number 5691-50: (6*5)+(5*6)+(4*9)+(3*1)+(2*5)+(1*0)=109 109 % 10 = 9 So 5691-50-9 is a valid CAS Registry Number.