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FirstStandard® Reference Materials

First Standard® is our trademark of high quality reference materials. We offer a comprehensive inventory of neat analytes, single component solutions, multi-component solutions, and stable isotope labeled compounds in a variety of fields to suite all your testing needs.

FirstStandard® Reference Materials

  • Catalog No: 1ST20188D10

    Coumaphos-d10

    CAS Number: 287397-86-8

    $570.00 - $570.00
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    CAS Number: 287397-86-8Synonym: Coumaphos-d10Formula: C14H6D10ClO5PSMolecular Weight: 372.83Purity: 98+%Form: SolidColor: Light YellowStorage Condi...

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  • Catalog No: 1ST22682D5

    Atrazine-d5

    CAS Number: 163165-75-1

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    CAS Number: 163165-75-1Synonym: Atrazine-d5; Atrazine D5 (ethylamino D5)Formula: C8H9D5ClN5Molecular Weight: 220.71Purity: 99.9+%Form: SolidColor: ...

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  • Catalog No: 1ST4201D4

    3-Amino-2-oxazolidinone-d4

    CAS Number: 1188331-23-8

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    CAS Number: 1188331-23-8Synonym: AOZ-d4Formula: C3H2D4N2O2Molecular Weight: 106.12Purity: 98+%Form: SolidColor: WhiteStorage Condition: -Transport...

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  • Catalog No: 1ST4207D4

    Furazolidone-d4

    CAS Number: 1217222-76-8

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    CAS Number: 1217222-76-8Synonym: Furazolidone-d4Formula: C8D4H3N3O5Molecular Weight: 229.18Purity: 98+%Form: SolidColor: YellowStorage Condition: ...

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  • Catalog No: 1ST4220

    2-NP-AOZ-d4

    CAS Number: 1007478-57-0

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    CAS Number: 1007478-57-0Synonym: 2-NP-AOZ-d4Formula: C10H5D4N3O4Molecular Weight: 239.22Purity: 98+%Form: SolidColor: Off-WhiteStorage Condition: ...

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  • Catalog No: 1ST4057

    Sulfaphenazole-d4

    CAS Number: 526-08-9 (Unlabeled)

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    CAS Number: 526-08-9 (Unlabeled)Synonym: Sulfaphenazole-d4Formula: C15H10D4N4O2SMolecular Weight: 318.39Purity: 98+%Form: SolidColor: WhiteStorage ...

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  • Catalog No: 1ST5738AD5

    Norfloxacin-d5 hydrochloride

    CAS Number: 1015856-57-1 (Unlabeled)

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    CAS Number: 1015856-57-1 (Unlabeled)Synonym: Norfloxacin-d5 hydrochlorideFormula: C16H13D5FN3O3 · HClMolecular Weight: 360.82Purity: 98+%Form: Soli...

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  • Catalog No: 1ST22107

    Atrazine-desisopropyl-d5 (ethylamino-d5)

    CAS Number: 1189961-78-1

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    CAS Number: 1189961-78-1Synonym: Atrazine-desisopropyl-d5 (ethylamino-d5)Formula: C5H3ClD5N5Molecular Weight: 178.63Purity: 98+%Form: SolidColor: W...

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  • Catalog No: 1ST1313D7

    Clorprenaline-d7

    CAS Number: 3811-25-4 (Unlabeled)

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    CAS Number: 3811-25-4 (Unlabeled)Synonym: Clorprenaline-d7Formula: C11H9D7ClNOMolecular Weight: 220.75Purity: 98+%Form: SolidColor: Off-WhiteStorag...

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  • Catalog No: 1ST5740AD8

    Ofloxacin-d8 hydrochloride

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    CAS Number: 1219170-21-4 (free base)Synonym: Ofloxacin-d8 hydrochlorideFormula: C18H12D8FN3O4 · HClMolecular Weight: 405.88Purity: 98+%Form: SolidC...

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  • Catalog No: 1ST1363

    Clenproperol-d7

    CAS Number: 1173021-09-4

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    CAS Number: 1173021-09-4Synonym: Clenproperol-d7Formula: C11H9D7Cl2N2OMolecular Weight: 270.21Purity: 98+%Form: SolidColor: WhiteStorage Condition:...

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  • Catalog No: 1ST1121D4

    Dioctyl phthalate-3,4,5,6-d4

    CAS Number: 93952-13-7

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    CAS Number: 93952-13-7Synonym: Dioctyl phthalate-3,4,5,6-d4Formula: C24D4H34O4Molecular Weight: 394.58Purity: 98+%Form: LiquidColor: ColorlessStora...

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  • Catalog No: 1ST4050

    Sulfamethoxazole-d4

    CAS Number: 1020719-86-1

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    CAS Number: 1020719-86-1Synonym: Sulfamethoxazole-d4Formula: C10H7D4N3O3SMolecular Weight: 257.3Purity: 98+%Form: SolidColor: Off-WhiteStorage Cond...

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  • Catalog No: 1ST4008D4

    Sulfamethizole-d4

    CAS Number: 144-82-1 (Unlabeled)

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    CAS Number: 144-82-1 (Unlabeled)Synonym: Sulfamethizole-d4Formula: C9H6D4N4O2S2Molecular Weight: 274.36Purity: 98+%Form: SolidColor: Off-WhiteStora...

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  • Catalog No: 1ST4051

    Sulfathiazole-d4

    CAS Number: 1020719-89-4

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    CAS Number: 1020719-89-4Synonym: Sulfathiazole-d4Formula: C9H5D4N3O2S2Molecular Weight: 259.34Purity: 98+%Form: SolidColor: Off-WhiteStorage Condit...

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  • Catalog No: 1ST161578D4

    Monooctyl phthalate-d4

    CAS Number: 1398065-74-1

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    CAS Number: 1398065-74-1Synonym: Monooctyl phthalate-d4Formula: C16H18D4O4Molecular Weight: 282.37Purity: 98+%Form: Oily LiquidColor: Light YellowS...

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  • Catalog No: 1ST22114

    Trietazine-d5

    CAS Number: 1397243-73-0

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    CAS Number: 1397243-73-0Synonym: Trietazine-d5Formula: C9H11ClD5N5Molecular Weight: 234.14Purity: 98+%Form: SolidColor: WhiteStorage Condition: RTT...

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  • Catalog No: 1ST4006D4

    Sulfadoxine-d4

    CAS Number: 1330266-05-1

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    CAS Number: 1330266-05-1Synonym: Sulfadoxine-d4Formula: C12H10D4N4O4SMolecular Weight: 314.35Purity: 98+%Form: SolidColor: WhiteStorage Condition: ...

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  • Catalog No: 1ST4022D4

    Sulfamethazine-D4

    CAS Number: 1020719-82-7

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    CAS Number: 1020719-82-7Synonym: Sulfamethazine-D4Formula: C12H10D4N4O2SMolecular Weight: 282.35Purity: 98+%Form: SolidColor: WhiteStorage Conditio...

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  • Catalog No: 1ST4033

    Sulfamonomethoxine-d4

    CAS Number: 1286538-12-2

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    CAS Number: 1286538-12-2Synonym: Sulfamonomethoxine-d4 (benzen-d4); 4-Amino-2,3,5,6-tetradeuterio-N-(6-methoxypyrimidin-4-yl)benzenesulfonamideForm...

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  • Catalog No: 1ST4003D4

    Sulfapyridine-d4

    CAS Number: 1189863-86-2

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    CAS Number: 1189863-86-2Synonym: 4-Amino-N-2-pyridinyl(benzene-d4)sulfonamide; 2-Sulfanilamidopyridine-d4; 2-Sulfapyridine-d4; Formula: C11H7D4N3O2...

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  • Catalog No: 1ST1114D4

    Dibutyl phthalate-d4

    CAS Number: 93952-11-5

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    CAS Number: 93952-11-5Synonym: Dibutyl phthalate-3,4,5,6-d4; 1,2-Benzene-3,4,5,6-d4-dicarboxylic acid, dibutyl esterFormula: C16H18D4O4Molecular We...

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  • Catalog No: 1ST1144D4

    Monobutyl phthalate-d4

    CAS Number: 478954-81-3

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    CAS Number: 478954-81-3Synonym: 1,2-(Benzene-d4)dicarboxylic Acid 1-Butyl Ester; Phthalic Acid-d4 Butyl Ester; Butyl Hydrogen Phthalate-d4; Mono-n-...

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  • Catalog No: 1ST161576D4

    Monopentyl phthalate-d4

    CAS Number: 1794756-28-7

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    CAS Number: 1794756-28-7Synonym: 1,2-(Benzene-d4)dicarboxylic Acid 1-Pentyl Ester; 1,2-(Benzene-d4)dicarboxylic Acid Monopentyl Ester; Phthalic Aci...

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