Reagents, X

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  • ALDRICH 2,6-Xylenol, >=99%

    MilliporeSigma

    Synonym(s): 2,6-Dimethylphenol; 2-Hydroxy- m -xylene; vic.- m -Xylenol Empirical Formula: C8H10O Linear Formula: (CH3)2C6H3OH Formula Weight: 122.16 MDL Number: MFCD00002240 Purity: ≥99% Boiling Point: …

  • 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:…

  • Xanthene-9-carboxamide, 98%

    Alfa Aesar

    Formula: C14H11NO2 Formula weight: 225.25 Purity: 98% CAS Number: 5813-90-1 Harmonized Tariff Code:  2932.99 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary Statements: …

  • SIGMA XAV939 >=98% (HPLC)

    MilliporeSigma

    Synonym(s): 3,5,7,8-Tetrahydro-2-[4-(trifluoromethyl)phenyl]-4H-thiopyrano[4,3-d]pyrimidin-4-one Empirical Formula: C14H11F3N2OS Linear Formula: C14H11F3N2OS Formula Weight: 312.31 MDL Number: …

  • 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…

  • Xylene Cyanol FF

    IBI Scientific

    Xylene Cyanol FF is used as a tracking dye to monitor the progress of electrophoresis separations. The tracking dye typically migrates with the DNA molecules around 5kb. Therefore, if you are monitoring the progress of longer electrophoresis run, Xylene Cyanol FF is the tracking dye of choice.

  • 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™

  • Xylitol

    MilliporeSigma

    European Pharmacopoeia (EP) Reference Standard Synonym(s): Xylite Empirical Formula: C5H12O5 Formula Weight: 152.15 Linear Formula: HOCH2[CH(OH)]3CH2OH MDL Number: MFCD00064292 Melting Point: …

  • p-Xylene

    MilliporeSigma

    analytical standard Synonym(s): 1,4-Dimethylbenzene Empirical Formula: C8H10 Formula Weight: 106.17 Linear Formula: C6H4(CH3)2 MDL Number: MFCD00008556 Purity: ≥99.5% (GC) Boiling Point: …

  • ALDRICH XPhos Pd G2

    MilliporeSigma

    Synonym(s): 2nd Generation XPhos Precatalyst; Chloro(2-dicyclohexylphosphino-2',4',6'-triisopropyl-1,1'-biphenyl)[2-(2'-amino-1,1'-biphenyl)]palladium(II); X-Phos aminobiphenyl palladium chloride precatalyst; XPhos-Pd-G2 Empirical Formula: C45H59ClNPPd Linear Formula: …

  • Xylenol Orange tetrasodium salt

    MilliporeSigma

    indicator for metal titration Synonym(s): 3,3'-Bis[ N,N -bis(carboxymethyl)aminomethyl]- o -cresolsulfonephthalein tetrasodium salt Empirical Formula: C31H28N2Na4O13S Formula Weight: 760.58 Linear Formula: …

  • Xylitol, 99%

    Alfa Aesar

    Formula: C5H12O5 Formula weight: 152.15 Purity: 99% CAS Number: 87-99-0 Harmonized Tariff Code:  2940.00

  • Xanthone

    MilliporeSigma

    United States Pharmacopeia (USP) Reference Standard Synonym(s): 9-Xanthenone Empirical Formula: C13H8O2 Formula Weight: 196.20 Linear Formula: C13H8O2 MDL Number: MFCD00005060 Boiling Point: …

  • X + V Factor Disks, for microbiology

    MilliporeSigma

    Synonyms: Differentiation Disks X + V Factors

  • "o-Xylene, for HPLC, 98%"

    MilliporeSigma

    Synonyms: 1,2-Dimethylbenzene Formula: C6H4(CH3)2 Formula Weight: 106.17 CAS No.: 95-47-6 Purity: 98% Density: 0.879 g/mL at 20 °C(lit.) Legal Information: CHROMASOLV is a registered trademark of Sigma-Aldrich Laborchemikalien GmbH …

  • p-Xylylenediamine, 97%

    Alfa Aesar

    Synonym(s): 1,4-Bis(aminomethyl)benzene, p-Phenylenebismethylamine Formula: C8H12N2 Formula weight: 136.20 Purity: 97% CAS Number: 539-48-0 UN Number: UN3259 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2921.59 Hazard Statements: H314-H318 Causes severe…

  • XTT sodium salt

    Alfa Aesar

    Synonym(s): 2,3-Bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide inner salt Formula: C22H16N7NaO13S2 Formula weight: 673.52 CAS Number: 111072-31-2 Harmonized Tariff Code:  2933.99

  • Xanthene-9-carboxylic acid, 98%

    Alfa Aesar

    Formula: C14H10O3 Formula weight: 226.23 Purity: 98% CAS Number: 82-07-5 Harmonized Tariff Code:  2932.99 Hazard Statements: H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Precautionary Statements: …

  • 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…

  • 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

  • XLT4 Agar Base

    BD

    Description: XLT4 Agar Base used with XLT4 Supplement as a selective differential medium for isolation of Salmonella.

  • SIGMA Xanthine Oxidase from bovine milk lyophilized powder, 0.4-1.0 units/mg…

    MilliporeSigma

    Synonym(s): XOD; Xanthine:oxygen oxidoreductase MDL Number: MFCD00082145 Storage: 2-8°C

  • SIGMA XE-991 >=98% (HPLC)

    MilliporeSigma

    Synonym(s): 10,10-bis(4-pyridinylmethyl)-9(10H)-anthracenone Empirical Formula: C26H20N2O Linear Formula: C26H20N2O Formula Weight: 376.45 MDL Number: MFCD05662331 Purity: ≥98% (HPLC) Storage: 2-8°C

  • Xanthohumol, primary pharmaceutical reference standard

    MilliporeSigma

    CAS No.: 6754-58-1 Synonyms: ( E )-1-[2,4-Dihydroxy-6-methoxy-3-(3-methyl-2-butenyl)phenyl]-3-(4-hydroxyphenyl)propenone; 2′,4,4′-Trihydroxy-6′-methoxy-3′-prenylchalcone Formula: C21H22O5 Formula Weight: 354.4 Linear Formula: …

  • Xylene Substitute

    MilliporeSigma

    EC Number: 265-068-8 General Description Non-toxic xylene replacement. Compatible with all tissue processors. May not be compatible with all permanent mounting medias.

  • 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…

  • Xylenes, ACS, 98.5+% (Assay, isomers plus ethylbenzene)

    Alfa Aesar

    Formula: (CH3)2C6H4 Formula weight: 106.17 Purity: 98.5+% (Assay, isomers plus ethylbenzene) CAS Number: 1330-20-7 UN Number: UN1307 Hazard Class: 3 Packing Group: III Harmonized Tariff Code:  2902.44 Hazard Statements: H226-H312-H332-H315 Flammable liquid and vapour.…

  • SIGMA X80 >=98% (HPLC)

    MilliporeSigma

    Synonym(s): 5-(5-{[1-(3-carboxyphenyl)-3-methyl-5-oxo-1,5-dihydro-4H-pyrazol-4-ylidene]methyl}-2-furyl)-2-chlorobenzoic acid Empirical Formula: C23H15ClN2O6 Linear Formula: C23H15ClN2O6 Formula Weight: …

  • SIGMA Xylanase 1, thermostable recombinant, expressed in E. coli, >=90% (SDS…

    MilliporeSigma

    Synonym(s): Xylanase , thermostable Purity: ≥20 mg protein/mL (Bradford); ≥90% (SDS-PAGE) Activity: ≥40 units/mg protein Storage: 2-8°C

  • SIAL Xylenol Blue

    MilliporeSigma

    indicator grade, Dye content 90 % Synonym(s): p -Xylenol Blue; p -Xylenolsulfonephthalein Empirical Formula: C23H22O5S Formula Weight: 410.48 Linear Formula: C23H22O5S MDL Number: MFCD00005870 Melting…

  • 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: …

  • Xylenol Orange

    LaMotte

    Formula: C31H31N2NaO13S in NaCl Formula Weight: 694.64

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