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CAS No 2103-64-2 , 3',4',5',6'-tetrahydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one

  • Name: 3',4',5',6'-tetrahydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
  • Synonyms: Pyrogallolphthalein; C.I. Mordant Violet 25;Alizarin violet; C.I. 45445; NSC8668; 4,5-Dihydroxyfluorescein; 2103-64-2;3',4',5',6'-tetrahydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one; Mordant violet 25;
  • CAS Registry Number:
  • Flash Point: 255.2°C
  • Boiling Point: 687.4°Cat760mmHg
  • Density: 1.81g/cm3
  • Refractive index: 1.865
  • Flash Point: 255.2°C
  • EINECS: 218-272-6
  • Molecular Weight: 364.30508
  • InchiKey: PHLYOKFVXIVOJC-UHFFFAOYSA-N
  • InChI: InChI=1S/C20H12O7/c21-13-7-5-11-17(15(13)23)26-18-12(6-8-14(22)16(18)24)
    20(11)10-4-2-1-3-9(10)19(25)27-20/h1-8,21-24H
  • Molecular Formula: C20H12O7
  • Molecular Structure:CAS No:2103-64-2 3',4',5',6'-tetrahydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
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2103-64-2 GALLEIN, C.I. NO. 45445

  • Hong kong Advanced Technology & Industrial Co., Ltd. [Manufacturer]
  • Tel: (852) 2390 2293/ (852) 2394 5546
  • Fax: (852) 2789 8314
  • Address: Unit B, 1/F., Cheong Shing Bldg.,
    17 Walnut St., Tai Kok Tsui, Kln,
    Hong Kong ,Hong kong
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2103-64-2 GALLEIN

  • Germany ABCR GmbH & Co KG [Manufacturer]
  • Tel: +49 721 95061-0
  • Fax: +49 721 95061-80
  • Address: Im Schlehert 10
    76187 Karlsruhe
    Germany ,Germany
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2103-64-2 GALLEIN 1-HYDRATE

  • United States Syntech Labs, Inc. [Manufacturer]
  • Tel: 732-545-8380
  • Fax: 732-545-6881
  • Address: Syntech Labs, Inc.
    100 Jersey Ave., Bldg. D
    New Brunswick, NJ 08901 ,United States
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2103-64-2 GALLEIN MONOHYDRATE

  • China SINO GREAT ENTERPRISE LTD. [Manufacturer]
  • Tel: +86-731-4427351
  • Fax: +86-731-4429615
  • Address: 154 Jianxiang South Road,
    Changsha, Hunan, China. ,China
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2103-64-2 Gallein Monohydrate

  • China Sino Great Enterprise Ltd. [Manufacturers]
  • Tel: 86-731-84427351
  • Fax: +86-731-84429615
  • Address: 154 Jianxiang South Road, Changsha, Hunan, 410005, China. changsha,hunanChina
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2103-64-2 Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,3',4',5',6'-tetrahydroxy-

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2103-64-2 Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,3',4',5',6'-tetrahydroxy-

  • Hong kong ADVANCED TECH. & IND. CO., LTD. [Distributor/Wholesaler]
  • Tel: 86-23902293
  • Fax: 86-27898314
  • Address: UNIT B, 1/F, CHEONG SHING IND. BLDG., 17 WALNUT ST., TAI KOK TSUI, KLN, HONG KONG Hong Kong,nilHong kong
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2103-64-2 Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,3',4',5',6'-tetrahydroxy-

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2103-64-2 Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,3',4',5',6'-tetrahydroxy-

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2103-64-2 GALLEIN; 3'',4'',5'',6''-TETRAHYDROXYSPIRO[ISOBENZOFURAN-1(3H),9''-(9 H)XANTHEN]-3-ONE

  • China Nanjing Chemlin Chemical Industry Co.,Ltd. [Manufacturer]
  • Tel: +86 25 8369-7070/ +86 138 51816776 (Mobile)
  • Fax: +86 25 8345-3275
  • Address: Rm.902 Longyin Plaza,
    No. 217 Zhongshan Rd.
    (N)Nanjing 210009,China ,China
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References of 3',4',5',6'-tetrahydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
Title: Gallein
CAS Registry Number: 2103-64-2
CAS Name: 3¢,4¢,5¢,6¢-Tetrahydroxyspiro[isobenzofuran-1(3H),9¢-[9H]xanthen]-3-one
Synonyms: 3¢,4¢,5¢,6¢-tetrahydroxyfluoran; 3¢,4¢,5¢,6¢-tetrahydroxyspiro[phthalan-1,9¢-xanthen]-3-one; pyrogallolphthalein; C.I. 45445; mordant violet 25
Molecular Formula: C20H12O7
Molecular Weight: 364.31
Percent Composition: C 65.94%, H 3.32%, O 30.74%
Literature References: Obtained by heating 1 part phthalic anhydride with 2 parts of pyrogallol or gallic acid: Baeyer, Ber. 4, 457 (1871); Buchka, Ann. 209, 261 (1881). Use as a biological stain: R. D. Lillie et al., Stain Technol. 49, 339 (1974); R. Welsh, ibid. 52, 261 (1977). See also H. J. Conn's Biological Stains, R. D. Lillie, Ed. (Williams & Wilkins, Baltimore, 9th ed., 1977) p 351.
Properties: Brownish-red powder or crystals with 1? H2O, or red crystals with greenish-yellow color when anhydr. Loses the water of crystn at about 180° and blackens above this temp. Does not melt even at 300°. pH 3.8 brownish-yellow; pH 6.6 rose-red. Almost insol in water, benzene, chloroform. Slightly sol in ether; sol in alc, acetone, alkalies.
 
Derivative Type: Disodium salt
Synonyms: Alizarin violet
Molecular Formula: C20H10Na2O7
Molecular Weight: 408.27
Percent Composition: C 58.84%, H 2.47%, Na 11.26%, O 27.43%
Properties: pH 10.6 rose; pH 13.0 violet.
 
Use: Clinical reagent (phosphates in urine). Monophosphates give a yellow, dibasic a red, tribasic a violet color. Used in soln of 0.5 g in 100 ml 50% alc; 2-3 drops for 100 ml liq. As sensitive indicator for acids, alkali hydroxides, NH3, but not for carbonates. Biological stain.