citral

cit·ral

C0372600 (sĭt′răl)n. A mobile pale-yellow liquid, C₁₀H₁₆O, derived from lemongrass oil and used in perfume and as a flavoring. Naturally derived citral consists of two geometric isomers, geranial and neral.

[citr(us) + -al.]

citral

(ˈsɪtrəl) n (Biochemistry) a yellow volatile liquid with a lemon-like odour, found in oils of lemon grass, orange, and lemon and used in perfumery: a terpene aldehyde consisting of the cis- isomer (citral-a or geranial) and the trans- isomer (citral-b or neral). Formula: (CH3)2C:CH(CH2)2C(CH3):CHCHO[C19: from citr(us) + -al³]

cit•ral

(ˈsɪ trəl)

n. a pale yellow liquid, C₁₀H₁₆O, used in perfumes, flavoring, and synthesis of vitamin A. [1890–95; citr (us) + -al¹]

Citral

citral

[′si‚tral] (organic chemistry) C₁₀H₁₆O A pale-yellow liquid that in commerce is a mixture of two isomeric forms, alpha and beta; insoluble in water, soluble in glycerin or benzyl benzoate; used in perfumery and as an intermediate to form other compounds. Also known as geranial; geranialdehyde.

Citral

(also 3,7-dimethyl-2,6-octadienal), a terpene aldehyde. Citral is a light yellow liquid with the structural formula

It has a strong lemon-like odor. Citral is insoluble in water but soluble in alcohol and ether. It has a boiling point of 228°–229°C and a density of 0.887 g/cm³ at 20°C.

Citral consists of a mixture of two stereoisomeric forms: the trans form α-citral (I), or geranial, and the cis form β-citral (II), or neral. A component of many essential oils, it is separated industrially from these oils—especially from lemongrass oil, which contains up to 80 percent citral. It is also synthesized from such compounds as isoprene, acetylene, and acetone.

Citral is used as an ingredient of flavorings, perfumes, and drugs. It is also used as a raw material in the production of vitamin A and many valuable odoriferous substances, including citronellol, ionone, methylionone, iralia, and hydroxycitronellal.

单词	citral
释义	citral cit·ral C0372600 (sĭt′răl)n. A mobile pale-yellow liquid, C₁₀H₁₆O, derived from lemongrass oil and used in perfume and as a flavoring. Naturally derived citral consists of two geometric isomers, geranial and neral. [citr(us) + -al.] citral (ˈsɪtrəl) n (Biochemistry) a yellow volatile liquid with a lemon-like odour, found in oils of lemon grass, orange, and lemon and used in perfumery: a terpene aldehyde consisting of the cis- isomer (citral-a or geranial) and the trans- isomer (citral-b or neral). Formula: (CH3)2C:CH(CH2)2C(CH3):CHCHO[C19: from citr(us) + -al³] cit•ral (ˈsɪ trəl) n. a pale yellow liquid, C₁₀H₁₆O, used in perfumes, flavoring, and synthesis of vitamin A. [1890–95; citr (us) + -al¹] Citral citral [′si‚tral] (organic chemistry) C₁₀H₁₆O A pale-yellow liquid that in commerce is a mixture of two isomeric forms, alpha and beta; insoluble in water, soluble in glycerin or benzyl benzoate; used in perfumery and as an intermediate to form other compounds. Also known as geranial; geranialdehyde. Citral (also 3,7-dimethyl-2,6-octadienal), a terpene aldehyde. Citral is a light yellow liquid with the structural formula It has a strong lemon-like odor. Citral is insoluble in water but soluble in alcohol and ether. It has a boiling point of 228°–229°C and a density of 0.887 g/cm³ at 20°C. Citral consists of a mixture of two stereoisomeric forms: the trans form α-citral (I), or geranial, and the cis form β-citral (II), or neral. A component of many essential oils, it is separated industrially from these oils—especially from lemongrass oil, which contains up to 80 percent citral. It is also synthesized from such compounds as isoprene, acetylene, and acetone. Citral is used as an ingredient of flavorings, perfumes, and drugs. It is also used as a raw material in the production of vitamin A and many valuable odoriferous substances, including citronellol, ionone, methylionone, iralia, and hydroxycitronellal. citral cit·ral (sit'răl), A monoterpene aldehyde consisting of both geometric isomers found in oils from lemon, orange, verbena, and lemon grass; citral-A is the trans-isomer and citral-B is the cis-isomer (neral).
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