diguanidinen.

/dʌɪˈɡwanɪdɪn/

/dʌɪˈɡwanɪdiːn/

Etymology: < di- comb. form + guanidine n.

Chemistry.

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†a. = diguanide n. a. Obsolete.

1879 Jrnl. Chem. Soc. 36 781 It is now found that this substance is a di-acid base, diguanidine, NH:C(NH₂)·NH·C(NH₂):NH.

1879 Jrnl. Chem. Soc. 36 781 Diguanidine and its salts are colourless.

b. Any compound containing two of the radicals —NH·C(NH)NH₂, derived from guanidine by the loss of a hydrogen atom.

ΚΠ

1927 Brit. Pat. 274,259 An improved process for the production of alkylene diguanidines.

1952 Morton & Hoggarth in E. H. Rodd Chem. Carbon Compounds I b. xiv. 931 This compound depresses the concentration of blood sugar, a property which is even more marked in certain diguanidines such as ‘Synthalin’.

1960 Brit. Med. Bull. 16 251/1 Diguanidines..may be considered as being made up of two guanidine molecules joined by a chain of methylene groups.

1961 Lancet 30 Sept. 776/1 Synthalin with two guanidines joined by a chain of methyl groups is a diguanidine. In phenformin the two guanidines coalesce..and it is a diguanide (or biguanide).

This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2018).

单词	diguanidine
释义	diguanidinen. /dʌɪˈɡwanɪdɪn//dʌɪˈɡwanɪdiːn/ Etymology: < di- comb. form + guanidine n. Chemistry. Categories » †a. = diguanide n. a. Obsolete. 1879 Jrnl. Chem. Soc. 36 781 It is now found that this substance is a di-acid base, diguanidine, NH:C(NH₂)·NH·C(NH₂):NH. 1879 Jrnl. Chem. Soc. 36 781 Diguanidine and its salts are colourless. b. Any compound containing two of the radicals —NH·C(NH)NH₂, derived from guanidine by the loss of a hydrogen atom. ΚΠ 1927 Brit. Pat. 274,259 An improved process for the production of alkylene diguanidines. 1952 Morton & Hoggarth in E. H. Rodd Chem. Carbon Compounds I b. xiv. 931 This compound depresses the concentration of blood sugar, a property which is even more marked in certain diguanidines such as ‘Synthalin’. 1960 Brit. Med. Bull. 16 251/1 Diguanidines..may be considered as being made up of two guanidine molecules joined by a chain of methylene groups. 1961 Lancet 30 Sept. 776/1 Synthalin with two guanidines joined by a chain of methyl groups is a diguanidine. In phenformin the two guanidines coalesce..and it is a diguanide (or biguanide). This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2018). < n.1879
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