rubianinn.

Brit.

/ˌruːbɪˈanᵻn/, U.S.

/ˌrubiˈænən/

Forms: 1800s– rubianin, 1800s– rubianine.

Origin: Formed within English, by derivation. Etymons: rubian n., -in suffix¹.

Etymology: < rubian n. + -in suffix¹.With the form rubianine compare -ine suffix⁵.

Chemistry. Now historical and rare.

A yellow crystalline glycoside isolated from madder root.Investigation of Schunck's original samples in the 1970s showed that rubianin is a phenolic glycoside of anthraquinone, C₂₅H₂₆O₁₃.

ΚΠ

1851 E. Schunck in Philos. Trans. (Royal Soc.) 141 445 The orange-coloured flocks..now consist of four different substances... The fourth substance I shall denominate Rubianine.

1874 W. Crookes Pract. Handbk. Dyeing ii. iv. 251 There is little doubt but that rubianin may exist pre-formed in madder.

1977 Notes & Rec. Royal Soc. 31 278 His [sc. Schunck's] ‘rubianine’, a beautifully crystalline yellow substance, appears to belong to the uncommon class of C-glycosides.

This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022).

单词	rubianin
释义	rubianinn. Brit. /ˌruːbɪˈanᵻn/, U.S. /ˌrubiˈænən/ Forms: 1800s– rubianin, 1800s– rubianine. Origin: Formed within English, by derivation. Etymons: rubian n., -in suffix¹. Etymology: < rubian n. + -in suffix¹.With the form rubianine compare -ine suffix⁵. Chemistry. Now historical and rare. A yellow crystalline glycoside isolated from madder root.Investigation of Schunck's original samples in the 1970s showed that rubianin is a phenolic glycoside of anthraquinone, C₂₅H₂₆O₁₃. ΚΠ 1851 E. Schunck in Philos. Trans. (Royal Soc.) 141 445 The orange-coloured flocks..now consist of four different substances... The fourth substance I shall denominate Rubianine. 1874 W. Crookes Pract. Handbk. Dyeing ii. iv. 251 There is little doubt but that rubianin may exist pre-formed in madder. 1977 Notes & Rec. Royal Soc. 31 278 His [sc. Schunck's] ‘rubianine’, a beautifully crystalline yellow substance, appears to belong to the uncommon class of C-glycosides. This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022). < n.1851
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