Reagents, X

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Reagents, X

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  • X-Gal

    ACTGene, Inc.

    X-Gal is a chromogenic substrate of b-Galactosidase. It is used in conjunction with IPTG for detection of b-Galactosidase activity in bacterial colonies in a colorimetric assay to detect recombinants (white) from non-recombinants (blue). X-Gal is cleaved at the b 1-4 bond between galactose and the…

  • Xylose-Lysine Deoxycholate Agar

    HiMedia

    XLD Agar was formulated by Taylor (1-5) for the isolation and differentiation of enteric pathogens including Salmonella Typhi from other Salmonella species. XLD Agar has been recommended for the identification of Enterobacteriaceae (7) and for the microbiological testing of foods, water…

  • ALDRICH o-Xylylenediamine, 95%

    MilliporeSigma

    Synonym(s): α,α′-Diamino-o-xylene; 1,2-Bis(aminomethyl)benzene; ortho-Phenylene-bis(methylamine) Formula: C8H12N2 Formula Weight: 136.19 CAS No.: 17300-02-6 Purity: ≥94.0% (GC); 95%

  • SIGMA Xanthine Oxidase microbial lyophilized powder, >=7 units/mg solid

    MilliporeSigma

    Synonym(s): XOD; Xanthine:oxygen oxidoreductase MDL Number: MFCD00082145 Storage: −20°C

  • Neo-Clear (Xylene Substitute) For Microscopy

    MilliporeSigma

    UN No.: UN3295

  • SUPELCO Xylitol, analytical standard

    MilliporeSigma

    Synonyms: Xylite Formula: HOCH2[CH(OH)]3CH2OH Formula Weight: 152.15 CAS No.: 87-99-0

  • XLD Agar

    BD

    Description: Selective differential medium for the isolation of Shigella and Providencia from stools

  • D-(+)-Xylose, =99%

    MilliporeSigma

    Formula: C5H10O5 Formula Weight: 150.13 CAS No.: 58-86-6 Purity: ≥99% Quality: White to off-white. Packaging: 1 kg in poly bottle Packaging: 10 mg in autosample vial Packaging: 500 g in poly bottle

  • SIGMA Xylitol >=99%

    MilliporeSigma

    Synonym(s): Xylite Empirical Formula: C5H12O5 Linear Formula: HOCH2[CH(OH)]3CH2OH Formula Weight: 152.15 MDL Number: MFCD00064292 Purity: ≥99% Melting Point: 94-97 °C(lit.) Beilstein Registry Number:…

  • Xanthine =99%

    MilliporeSigma

    Synonym: 2,6-Dihydroxypurine CAS Number: 69-89-6 Empirical Formula (Hill Notation): C5H4N4O2 Molecular Weight: 152.11 Beilstein Registry Number: 8733 EC Number: 200-718-6 MDL Number: MFCD00078453 PubChem…

  • SIGMA Xanthohumol from hop (Humulus lupulus) >=96% (HPLC)

    MilliporeSigma

    Empirical Formula: C21H22O5 Linear Formula: C21H22O5 Formula Weight: 354.40 MDL Number: MFCD00210576 Purity: ≥96% (HPLC) Storage: 2-8°C

  • "o-Xylene, analytical standard"

    MilliporeSigma

    Synonyms: 1,2-Dimethylbenzene Formula: C6H4(CH3)2 Formula Weight: 106.17 CAS No.: 95-47-6 Purity: ≥99.5% (GC) Density: 0.879 g/mL at 20 °C(lit.)

  • XLD Agar Granulated, 500G

    MilliporeSigma

    Formula: Mixture Formula Weight: N/A CAS Number: Synonym(s): Xylose Lysine Deoxycholate Agar Description: Typical Composition (g/L): Yeast extract 3.0; sodium chloride 5.0; D(+)xylose 3.5; lactose 7.5; sucrose 7.5; L(+)lysine 5.0; sodium deoxycholate 2.5; sodium thiosulfate…

  • Xanthan gum from Xanthomonas campestris

    MilliporeSigma

    Synonym: Gum xanthan CAS Number: 1138-66-2 EC Number: 234-394-2 MDL Number: MFCD00131256 Other Notes A polysaccharide containing glucose, mannose, potassium glucuronate, acetate and pyruvate. Forms a hydrophilic colloid. Packaging 100, 500 g in poly bottle …

  • o-Xylylene dichloride, 98%

    Alfa Aesar

    Synonym(s): 1,2-Bis(chloromethyl)benzene, alpha,alpha'-Dichloro-o-xylene Formula: C8H8Cl2 Formula weight: 175.06 Purity: 98% CAS Number: 612-12-4 UN Number: UN2928 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2903.99 Hazard Statements: H330-H314-H318-H302…

  • X-Gal

    IBI Scientific

    X-GAL is histochemical substrate for β-galactosidase, allowing the detection of lac gene expression. To make a stock solution of X-GAL, dissolve the X-GAL in dimethylformamide to make a 20mg/ml solution. Note: Use either a glass or polypropylene tube. Add 4ml of this solution per liter of…

  • o-Xylene, 99%

    Alfa Aesar

    Synonym(s): 1,2-Dimethylbenzene Formula: C8H10 Formula weight: 106.17 Purity: 99% CAS Number: 95-47-6 UN Number: UN1307 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2902.41 Hazard Statements: H226-H312-H332-H315 Flammable liquid and vapour. Harmful in…

  • m-Xylene, anhydrous, =99%

    MilliporeSigma

    Synonyms: 1,3-Dimethylbenzene Formula: C6H4(CH3)2 Formula Weight: 106.17 CAS No.: 108-38-3 Purity: ≥99% Density: 0.868 g/mL at 25 °C(lit.) Packaging: 1, 2, 4 x 2 L in Sure/Seal™ Packaging: 100 mL in Sure/Seal™

  • p-Xylylene dichloride, 98%

    Alfa Aesar

    Synonym(s): 1,4-Bis(chloromethyl)benzene, alpha,alpha'-Dichloro-p-xylene Formula: C8H8Cl2 Formula weight: 175.06 Purity: 98% CAS Number: 623-25-6 UN Number: UN2928 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2903.99 Hazard Statements: H330-H314-H318-H302…

  • o-Xylene, puriss. p.a., =99.0% (GC)

    MilliporeSigma

    Synonyms: 1,2-Dimethylbenzene Formula: C6H4(CH3)2 Formula Weight: 106.17 CAS No.: 95-47-6 Purity: ≥99.0% (GC) Density: 0.879 g/mL at 20 °C(lit.)

  • m-Xylene, 99%

    Alfa Aesar

    Synonym(s): 1,3-Dimethylbenzene Formula: C8H10 Formula weight: 106.17 Purity: 99% CAS Number: 108-38-3 UN Number: UN1307 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2902.42 Risk Phrases: 10-20/21-38 Flammable. Harmful by inhalation and in contact with…

  • Xanthine Oxidase from bovine milk, Grade I, ammonium sulfate suspension, =0.4…

    MilliporeSigma

    Synonym: XOD, Xanthine:oxygen oxidoreductase CAS Number: 9002-17-9 EC Number: 232-657-6 Enzyme Commission (EC) Number: 1.17.3.2. MDL Number: MFCD00082145 Analysis Note Protein determined by biuret General description Formerly E.C. 1.1.3.22 Unit…

  • XLD Agar ISO 6579:2002

    MilliporeSigma

    for microbiology Synonym(s): Xylose Lysine Deoxycholate Agar

  • Xylenol Orange Sodium Salt ACS

    Ricca Chemical

  • Xylenol Blue

    Alfa Aesar

    Synonym(s): p-Xylenolsulfonephthalein Formula: C23H22O5S Formula weight: 410.49 CAS Number: 125-31-5 Harmonized Tariff Code:  2934.99 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary…

  • Xanthine =99.5% (HPLC), purified by recrystallization

    MilliporeSigma

    Synonym: 2,6-Dihydroxypurine CAS Number: 69-89-6 Empirical Formula (Hill Notation): C5H4N4O2 Molecular Weight: 152.11 Beilstein Registry Number: 8733 EC Number: 200-718-6 MDL Number: MFCD00078453 PubChem…

  • Xylene Cyanol FF for molecular biology, BioReagent

    MilliporeSigma

    Synonym: Acid blue 147, Cyanol FF, XC CAS Number: 2650-17-1 Empirical Formula (Hill Notation): C25H27N2NaO6S2 Molecular Weight: 538.61 Color Index Number: 42135 EC Number: 220-167-5 MDL Number: …

  • Xylenol Orange tetrasodium salt, ACS

    Alfa Aesar

    Formula: C31H28N2Na4O13S Formula weight: 760.59 CAS Number: 3618-43-7 Harmonized Tariff Code:  2922.50

  • SIAL Xylenes

    MilliporeSigma

    histological grade Synonym(s): Xylene mixture of isomers Amino Acid Sequence: Empirical Formula: C8H10 Formula Weight: 106.17 Linear Formula: C6H4(CH3)2 MDL Number: MFCD00077264 Purity: Boiling Point: …

  • SIAL Xylidyl blue I

    MilliporeSigma

    Synonym(s): 4-Hydroxy-3-[2-hydroxy-3-(2,4-dimethylphenylaminocarbonyl)-1-naphthylazobenzenesulfonic acid sodium salt; Magonsulfonate Empirical Formula: C25H20N3NaO6S Formula Weight: 513.50 Linear Formula: …

  • SIGMA XTT sodium salt, powder, BioReagent, suitable for cell culture

    MilliporeSigma

    Synonym(s): 2,3-Bis(2-methoxy-4-nitro-5-sulfophenyl)-2 H -tetrazolium-5-carboxanilide inner salt Formula: C22H16N7NaO13S2 Formula Weight: 673.52 CAS No.: 111072-31-2 Purity: ≥90% Application: XTT has been used in…

  • Xylene Substitute

    MilliporeSigma

    purum p.a., for microscopy Density: 0.75 g/mL at 20 °C Refractive Index: n 20/D 1.420 RIDADR: UN 3295 3/PG 3

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