isat-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

an element derived from Latin isat-is (Greek ἰσάτις) woad, used in Chemistry to form the name of isatin n. (see below), and of other bodies related to it and to indigo. Among these are:

isatane n.

Brit.

/ˈʌɪsəteɪn/

U.S.

/ˈaɪsəˌteɪn/

a crystalline compound formed by the reduction of isatin with sodium.

ΚΠ

1892 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) III. 78/2 Isatane C₃₂H₂₆N₄O₆.

1900 Jrnl. Chem. Soc. 78 i. 649 This substance is really present in an unstable compound called isatan.

isatic acid n.

Brit.

/ʌɪˌsatɪk ˈasɪd/

U.S.

/aɪˌsædɪk ˈæsəd/

C₈H₇NO₃ (= isatin + H₂O), substitution products of which are bromisatic acid (C₈H₆BrNO₃), chlorisatic acid, etc.; the salts are isatates

/ˈaɪsəteɪts/, broˈmisatates, chloˈrisatates, etc.

ΘΚΠ

the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > miscellaneous others

rheumic acid1816

arabic acida1836

rubiacic acid1835

aspartic acid1836

sylvic acid1836

tannic acid1836

oenanthic acid1837

gummic acid1838

retinic acid1838

roccellic acid1838

rubinic acid1838

lobelic acid1840

polychromatic acid1840

rhabarbaric acid1840

roccelline1840

humic1844

sumbulolic acid1844

isatic acid1845

opianic acid1845

parthenic acid1845

polychromic acid1847

styphnic acid1848

metapectic acid1849

tanningenic acid1852

jalapic acid1853

jalapinolic acid1855

sinapic acid1857

amalic acid1863

phycic acid1864

filicic acid1865

isamic acid1865

tannocaffeic acidc1865

tricarballylic acid1865

guaiaretic acid1866

pectous acid1866

phytomelin1866

porphyric acid1866

thujetic acid1868

turpetholic acid1868

viridic acid1868

rheotannic acid1869

arabinic acid1870

frangulic1872

sclerotic acid1876

theobromic acid1878

gynocardic acid1897

chaulmoogric acid1904

1845 Penny Cycl. Suppl. I. 346/1 Isatic acid..is perfectly insoluble in cold water, but when heated in water it is decomposed into isatin and water.

1865–72 H. Watts Dict. Chem. III. 404 The solution..deposits..crystals of isatin, which in fact differs from isatic acid, only by the elements of water.

1865–72 H. Watts Dict. Chem. III. 405 Chlorisatate of potassium..crystallizes in shining flattened quadrilateral needles of a light yellow colour.

1865–72 H. Watts Dict. Chem. III. 405 The other salts of chlorisatic acid are obtained by double decomposition.

Categories »

isatimide n.

Brit.

/ʌɪˈsatᵻmʌɪd/

U.S.

/aɪˈsædəˌmaɪd/

the imide of isatin, C₂₄H₁₇N₅O₄.

Categories »

isatite n.

Brit.

/ˈʌɪsətʌɪt/

U.S.

/ˈaɪsəˌtaɪt/

see isatin n.

iˈsatogen n.

Brit.

/ʌɪˈsatədʒ(ə)n/

U.S.

/aɪˈsædədʒ(ə)n/

any compound containing the bicyclic group C₈H₄NO₂ found in isatin.

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic dyes > [noun] > colouring red > compounds found in isatin

isatogen1882

1882 Jrnl. Chem. Soc. 42 620 To ascertain the nature of the isatogen-group, experiments were made on its derivatives.

1916 Chem. Abstr. 10 1334 The isatogens are typical quinones, forming a new class of m-quinoid compds., in which the group N:O plays the role of a CO group.

1965 Jrnl. Pharmacy & Pharmacol. 17 736 The isatogens..were all effective against Gram-positive organisms.

1972 W. A. Remers in W. J. Houlihan Chem. Heterocyclic Compounds XXV. i. 193 Isatogens..also undergo addition to the 1,2-double bond.

isatoˈgenic adj.

Brit.

/ˌʌɪsətə(ʊ)ˈdʒɛnɪk/

U.S.

/ˌaɪsədoʊˈdʒɛnɪk/

/ˌaɪsədəˈdʒɛnɪk/

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic dyes > [adjective] > compounds found in isatin

isatogenic1882

1882 Jrnl. Chem. Soc. 42 198 Isatogenic acid is very unstable, and cannot be obtained either from the above salt, or from free orthonitropropiolic acid, as it is immediately converted into isatin.

1889 H. E. Roscoe & C. Schorlemmer Treat. Chem. III. v. 262 When the solution is poured into water, the isatogenic acid decomposes instantaneously into carbon dioxide and isatin.

1892 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) III. 76/1 Isatogenic acid is perhaps formed by shaking ο-nitro-phenyl-propiolic acid with H₂SO₄.

1948 P. Wengraf & H. P. Baumann tr. L. Diseren Chem. Technol. Dyeing & Printing i. i. 26 The formation of indigo can be explained by an intermediate rearrangement of the o-nitrophenyl propiolic acid into isatogenic acid... The latter product is reduced to indigo by splitting off CO₂.

ˌisato-sulˈphuric acid n.

Brit.

/ˌʌɪsətə(ʊ)sʌlˌfjʊərɪk ˈasɪd/

/ˌʌɪsətə(ʊ)sʌlˌfjɔːrɪk ˈasɪd/

U.S.

/ˈˌaɪsədoʊˌsəlˌfjʊrɪk ˈæsəd/

an acid containing the elements of isatin and sulphuric acid or sulphuric anhydride; the salts of which are isato-sulphates.

ΚΠ

1865–72 H. Watts Dict. Chem. III. 409 Isatosulphuric acid is a strong acid, separating even the stronger mineral acids from their salts.

1865–72 H. Watts Dict. Chem. III. 410 Isatosulphite of Ammonium,..of Potassium.

ˈisatyde n.

Brit.

/ˈʌɪsətʌɪd/

U.S.

/ˈaɪsəˌtaɪd/

(†isathyd) a substance bearing the same relation to isatin that indigo-white bears to indigo-blue, being formed from it by the addition of one atom of hydrogen.

ΚΠ

1865–72 H. Watts Dict. Chem. III. 411 Isatyde is white, with a slightly greyish tint, tasteless, and inodorous. It..separates on cooling in microscopic scales.

Draft additions 1993

isaˈtogenate n.

Brit.

/ˌʌɪsəˈtɒdʒᵻneɪt/

U.S.

/ˌaɪsəˈtɑdʒəˌneɪt/

a salt or ester of isatogenic acid.

ΘΚΠ

the world > matter > chemistry > chemical substances > esters > [noun] > salts, esters, or anions > others

citrate1788

pyrophosphate1827

paraphosphate1837

thioglycolate1877

isatogenate1882

orotate1905

hydrazoate1910

octoate1911

octanoate1945

1882 Jrnl. Chem. Soc. 42 198 (heading) Ethyl isatogenate. This compound is obtained by the action of concentrated sulphuric acid on ethyl orthonitropropiolate; it crystallises in yellow needles, m.p. 115°.

1935 Chem. Abstr. 29 1089 Me isatogenate is reduced at low temp. by dil. PhNHNH₂ to the ketoindolenine.

This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).

单词	isat-
释义	isat-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. an element derived from Latin isat-is (Greek ἰσάτις) woad, used in Chemistry to form the name of isatin n. (see below), and of other bodies related to it and to indigo. Among these are: isatane n. Brit. /ˈʌɪsəteɪn/ , U.S. /ˈaɪsəˌteɪn/ a crystalline compound formed by the reduction of isatin with sodium. ΚΠ 1892 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) III. 78/2 Isatane C₃₂H₂₆N₄O₆. 1900 Jrnl. Chem. Soc. 78 i. 649 This substance is really present in an unstable compound called isatan. isatic acid n. Brit. /ʌɪˌsatɪk ˈasɪd/ , U.S. /aɪˌsædɪk ˈæsəd/ C₈H₇NO₃ (= isatin + H₂O), substitution products of which are bromisatic acid (C₈H₆BrNO₃), chlorisatic acid, etc.; the salts are isatates /ˈaɪsəteɪts/, broˈmisatates, chloˈrisatates, etc. ΘΚΠ the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > miscellaneous others rheumic acid1816 arabic acida1836 rubiacic acid1835 aspartic acid1836 sylvic acid1836 tannic acid1836 oenanthic acid1837 gummic acid1838 retinic acid1838 roccellic acid1838 rubinic acid1838 lobelic acid1840 polychromatic acid1840 rhabarbaric acid1840 roccelline1840 humic1844 sumbulolic acid1844 isatic acid1845 opianic acid1845 parthenic acid1845 polychromic acid1847 styphnic acid1848 metapectic acid1849 tanningenic acid1852 jalapic acid1853 jalapinolic acid1855 sinapic acid1857 amalic acid1863 phycic acid1864 filicic acid1865 isamic acid1865 tannocaffeic acidc1865 tricarballylic acid1865 guaiaretic acid1866 pectous acid1866 phytomelin1866 porphyric acid1866 thujetic acid1868 turpetholic acid1868 viridic acid1868 rheotannic acid1869 arabinic acid1870 frangulic1872 sclerotic acid1876 theobromic acid1878 gynocardic acid1897 chaulmoogric acid1904 1845 Penny Cycl. Suppl. I. 346/1 Isatic acid..is perfectly insoluble in cold water, but when heated in water it is decomposed into isatin and water. 1865–72 H. Watts Dict. Chem. III. 404 The solution..deposits..crystals of isatin, which in fact differs from isatic acid, only by the elements of water. 1865–72 H. Watts Dict. Chem. III. 405 Chlorisatate of potassium..crystallizes in shining flattened quadrilateral needles of a light yellow colour. 1865–72 H. Watts Dict. Chem. III. 405 The other salts of chlorisatic acid are obtained by double decomposition. Categories » isatimide n. Brit. /ʌɪˈsatᵻmʌɪd/ , U.S. /aɪˈsædəˌmaɪd/ the imide of isatin, C₂₄H₁₇N₅O₄. Categories » isatite n. Brit. /ˈʌɪsətʌɪt/ , U.S. /ˈaɪsəˌtaɪt/ see isatin n. iˈsatogen n. Brit. /ʌɪˈsatədʒ(ə)n/ , U.S. /aɪˈsædədʒ(ə)n/ any compound containing the bicyclic group C₈H₄NO₂ found in isatin. ΘΚΠ the world > matter > chemistry > organic chemistry > organic dyes > [noun] > colouring red > compounds found in isatin isatogen1882 1882 Jrnl. Chem. Soc. 42 620 To ascertain the nature of the isatogen-group, experiments were made on its derivatives. 1916 Chem. Abstr. 10 1334 The isatogens are typical quinones, forming a new class of m-quinoid compds., in which the group N:O plays the role of a CO group. 1965 Jrnl. Pharmacy & Pharmacol. 17 736 The isatogens..were all effective against Gram-positive organisms. 1972 W. A. Remers in W. J. Houlihan Chem. Heterocyclic Compounds XXV. i. 193 Isatogens..also undergo addition to the 1,2-double bond. isatoˈgenic adj. Brit. /ˌʌɪsətə(ʊ)ˈdʒɛnɪk/ , U.S. /ˌaɪsədoʊˈdʒɛnɪk/ , /ˌaɪsədəˈdʒɛnɪk/ ΘΚΠ the world > matter > chemistry > organic chemistry > organic dyes > [adjective] > compounds found in isatin isatogenic1882 1882 Jrnl. Chem. Soc. 42 198 Isatogenic acid is very unstable, and cannot be obtained either from the above salt, or from free orthonitropropiolic acid, as it is immediately converted into isatin. 1889 H. E. Roscoe & C. Schorlemmer Treat. Chem. III. v. 262 When the solution is poured into water, the isatogenic acid decomposes instantaneously into carbon dioxide and isatin. 1892 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) III. 76/1 Isatogenic acid is perhaps formed by shaking ο-nitro-phenyl-propiolic acid with H₂SO₄. 1948 P. Wengraf & H. P. Baumann tr. L. Diseren Chem. Technol. Dyeing & Printing i. i. 26 The formation of indigo can be explained by an intermediate rearrangement of the o-nitrophenyl propiolic acid into isatogenic acid... The latter product is reduced to indigo by splitting off CO₂. ˌisato-sulˈphuric acid n. Brit. /ˌʌɪsətə(ʊ)sʌlˌfjʊərɪk ˈasɪd/ , /ˌʌɪsətə(ʊ)sʌlˌfjɔːrɪk ˈasɪd/ , U.S. /ˈˌaɪsədoʊˌsəlˌfjʊrɪk ˈæsəd/ an acid containing the elements of isatin and sulphuric acid or sulphuric anhydride; the salts of which are isato-sulphates. ΚΠ 1865–72 H. Watts Dict. Chem. III. 409 Isatosulphuric acid is a strong acid, separating even the stronger mineral acids from their salts. 1865–72 H. Watts Dict. Chem. III. 410 Isatosulphite of Ammonium,..of Potassium. ˈisatyde n. Brit. /ˈʌɪsətʌɪd/ , U.S. /ˈaɪsəˌtaɪd/ (†isathyd) a substance bearing the same relation to isatin that indigo-white bears to indigo-blue, being formed from it by the addition of one atom of hydrogen. ΚΠ 1865–72 H. Watts Dict. Chem. III. 411 Isatyde is white, with a slightly greyish tint, tasteless, and inodorous. It..separates on cooling in microscopic scales. Draft additions 1993 isaˈtogenate n. Brit. /ˌʌɪsəˈtɒdʒᵻneɪt/ , U.S. /ˌaɪsəˈtɑdʒəˌneɪt/ a salt or ester of isatogenic acid. ΘΚΠ the world > matter > chemistry > chemical substances > esters > [noun] > salts, esters, or anions > others citrate1788 pyrophosphate1827 paraphosphate1837 thioglycolate1877 isatogenate1882 orotate1905 hydrazoate1910 octoate1911 octanoate1945 1882 Jrnl. Chem. Soc. 42 198 (heading) Ethyl isatogenate. This compound is obtained by the action of concentrated sulphuric acid on ethyl orthonitropropiolate; it crystallises in yellow needles, m.p. 115°. 1935 Chem. Abstr. 29 1089 Me isatogenate is reduced at low temp. by dil. PhNHNH₂ to the ketoindolenine. This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022). < comb. form1845
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