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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: 1ST4043D4

    Sulfaguanidine-d4

    CAS Number: 57-67-0 (Unlabeled)

    Original price $400.00 - Original price $400.00
    Original price
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    Current price $400.00
    In stock

    CAS Number: 57-67-0 (Unlabeled)Synonym: 4-Amino-N-(aminoiminomethyl)benzenesulfonamide-d4; N1-(diaminomethylene)sulfanilamide-d4; 1-Sulfanilylguani...

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    Original price $400.00 - Original price $400.00
    Original price
    $400.00
    $400.00 - $400.00
    Current price $400.00
  • Catalog No: 1ST1304D9A

    Terbutaline-d9 hydrochloride

    CAS Number: 1189658-09-0 (Free base)

    Original price $400.00 - Original price $400.00
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    Current price $400.00
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    CAS Number: 1189658-09-0 (Free base)Synonym: 5-[2-[[1,1-Di(methyl-d3)ethyl-2,2,2-d3]amino]-1-hydroxyethyl]-1,3-benzenediol hydrochlorideFormula: C1...

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    Original price $400.00 - Original price $400.00
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    Current price $400.00
  • Catalog No: 1ST4100D3A

    Danofloxacin-d3 hydrochloride

    CAS Number: 1217683-55-0 (Free base)

    Original price $300.00 - Original price $300.00
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    Current price $300.00
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    CAS Number: 1217683-55-0 (Free base)Synonym: NAFormula: C19H17D3FN3O3 . HClMolecular Weight: 396.86Purity: 98+%Form: SolidColor: YellowStorage Cond...

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    Original price $300.00 - Original price $300.00
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    $300.00
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    Current price $300.00
  • Catalog No: 1ST1117D4

    Diamyl phthalate-d4

    CAS Number: 358730-89-9

    Original price $50.00 - Original price $50.00
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    Current price $50.00
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    CAS Number: 358730-89-9Synonym: Dipentyl phthalate-3,4,5,6-d4; Amyl Phthalate D4; Di-n-pentyl Phthalate-d4; Phthalic acid, bis-n-pentyl ester D4; 1...

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    Original price $50.00 - Original price $50.00
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    Current price $50.00
  • Catalog No: 1ST1147D4

    Monocyclohexyl phthalate-d4

    CAS Number: 1398066-18-6

    Original price $100.00 - Original price $100.00
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    CAS Number: 1398066-18-6Synonym: 1,2-Benzenedicarboxylic Acid 1-Cyclohexyl Ester-d4; Phthalic Acid Cyclohexyl Ester-d4; Phthalic Acid Monocyclohexy...

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    Original price $100.00 - Original price $100.00
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  • Catalog No: 1ST1115D4

    Dicyclohexyl phthalate-d4

    CAS Number: 358731-25-6

    Original price $60.00 - Original price $60.00
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    CAS Number: 358731-25-6Synonym: Dicyclohexyl phthalate-3,4,5,6-d4; Phthalic acid, bis-cyclohexyl ester D4; 1,2-Benzene-3,4,5,6-d4-dicarboxylic acid...

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    Original price $60.00 - Original price $60.00
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  • Catalog No: 1ST1129D4

    Diisononyl phthalate-d4

    CAS Number: 1332965-90-8

    Original price $100.00 - Original price $100.00
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    CAS Number: 1332965-90-8Synonym: DINP-d4Formula: C26H38D4O4Molecular Weight: 422.63Purity: 98+%Form: LiquidColor: ColorlessStorage Condition: 2-8°C...

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    Original price $100.00 - Original price $100.00
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  • Catalog No: 1ST4037

    Sulfameter-d4

    CAS Number: 1189483-96-2

    Original price $600.00 - Original price $600.00
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    CAS Number: 1189483-96-2Synonym: Sulfamethoxydiazine-d4; 4-Amino-N-(5-methoxy-2-pyrimidinyl)benzene-2,3,5,6-d4-sulfonamideFormula: C11H8D4N4O3SMole...

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    Original price $600.00 - Original price $600.00
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    Current price $600.00
  • Catalog No: 1ST15518D4

    Monoisononyl phthalate-d4

    CAS Number: 1332965-96-4

    Original price $100.00 - Original price $100.00
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    CAS Number: 1332965-96-4Synonym: 1,2-Benzene-3,4,5,6-d4-dicarboxylic acid, 1-(7-methyloctyl) ester; 1-(7-Methyloctyl) hydrogen 1,2-benzene-3,4,5,6-...

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    Original price $100.00 - Original price $100.00
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  • Catalog No: 1ST1119D4

    Diisobutylphthalate-d4

    CAS Number: 358730-88-8

    Original price $60.00 - Original price $60.00
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    CAS Number: 358730-88-8Synonym: Diisobutyl phthalate-3,4,5,6-d4Formula: C16H18D4O4Molecular Weight: 282.37Purity: 98+%Form: Oily liquidColor: Color...

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    Original price $60.00 - Original price $60.00
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  • Catalog No: 1ST1360

    Ractopamine-d6 hydrochloride

    Original price $500.00 - Original price $500.00
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    Current price $500.00
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    CAS Number: 1276197-17-1Synonym: 4-Hydroxy-α-[[[3-(4-hydroxyphenyl)-1-methylpropyl]amino]methyl]benzene-methanol-d6 HydrochlorideFormula: C18H17D6N...

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    Original price $500.00 - Original price $500.00
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  • Catalog No: 1ST15515D4

    Monoisobutyl phthalate-d4

    CAS Number: 1219802-26-2

    Original price $100.00 - Original price $100.00
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    CAS Number: 1219802-26-2Synonym: 1,2-Benzene-3,4,5,6-d4-dicarboxylic Acid Mono(2-methylpropyl) Ester;Formula: C12H10D4O4Molecular Weight: 226.26Pur...

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    Original price $100.00 - Original price $100.00
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    Current price $100.00
  • Catalog No: 1ST10535AD3

    Nordoxepin-d3 hydrochloride

    CAS Number: 1331665-54-3

    Original price $440.00 - Original price $440.00
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    Current price $440.00

    CAS Number: 1331665-54-3Synonym: 3-(Dibenz[b,e]oxepin-11(6H)-ylidene)-N-(methyl-d3)-1-propanamine; ∆11(6H),γ-[3-(Methylamino-d3)propylidene]dibenz[...

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    Original price $440.00 - Original price $440.00
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    Current price $440.00
  • Catalog No: 1ST169066D5

    Resiquimod-d5

    Original price $360.00 - Original price $360.00
    Original price
    $360.00
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    Current price $360.00

    CAS Number: 2252319-44-9Synonym: 1-[4-Amino-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]-2-methylpropan-2-ol-d5; 4-Amino-2-(ethoxymethyl)-1-(2-...

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    Original price $360.00 - Original price $360.00
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    Current price $360.00
  • Catalog No: 1ST10072AD6

    Metformin-d6 hydrochloride

    CAS Number: 1185166-01-1

    Original price $360.00 - Original price $360.00
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    Current price $360.00

    CAS Number: 1185166-01-1Synonym: -Formula: C4D6H5N5·HClMolecular Weight: 171.66Purity: NAForm: SolidColor: White to Off-WhiteStorage Condition: -20...

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    Original price $360.00 - Original price $360.00
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    Current price $360.00
  • Catalog No: 1ST10062D6A

    Diphenhydramine-d6 hydrochloride

    CAS Number: 1189986-72-8

    Original price $145.00 - Original price $145.00
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    CAS Number: 1189986-72-8Synonym: 2-(Diphenylmethoxy)-N,N-dimethylethanamine-d6 Hydrochloride;Formula: C17H15D6NO·HClMolecular Weight: 297.85Purity:...

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    Original price $145.00 - Original price $145.00
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    Current price $145.00
  • Catalog No: 1ST160895D4

    Rilmenidine-d4

    Original price $260.00 - Original price $260.00
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    Current price $260.00

    CAS Number: 85047-14-9Synonym: 2-Oxazol-4,5-d2-amine, N-(dicyclopropylmethyl)-4,5-dihydro-4,5-d2- (9CI)Formula: C10H12D4N2OMolecular Weight: 184.27...

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    Original price $260.00 - Original price $260.00
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    Current price $260.00
  • Catalog No: 1ST11441D3A

    N-Desmethyl clomipramine-d3 hydrochloride

    CAS Number: 1189971-04-7

    Original price $600.00 - Original price $600.00
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    CAS Number: 1189971-04-7Synonym: 3-Chloro-10,11-dihydro-N-(methyl-d3)-5H-dibenz[b,f]azepine-5-propanamine Hydrochloride; Chlordesipramine-d3 Hydroc...

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    Original price $600.00 - Original price $600.00
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  • Catalog No: 1ST10111D3

    Clomipramine-d3 hydrochloride

    CAS Number: 1398065-86-5

    Original price $280.00 - Original price $280.00
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    CAS Number: 1398065-86-5Synonym: Clomipramine-d3 Hydrochloride (N-methyl-d3)Formula: C19H20ClD3N2 . HClMolecular Weight: 354.33Purity: NAForm: Soli...

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    Original price $280.00 - Original price $280.00
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    Current price $280.00
  • Catalog No: 1ST10607D8

    N-Desmethyl sildenafil-d8

    CAS Number: 1185168-06-2

    Original price $240.00 - Original price $240.00
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    Current price $240.00

    CAS Number: 1185168-06-2Synonym: 5-[2-Ethoxy-5-(1-piperazinylsulfonyl)phenyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one-d8; D...

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    Original price $240.00 - Original price $240.00
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    Current price $240.00
  • Catalog No: 1ST10364D5

    Tamoxifen-d5

    CAS Number: 157698-32-3

    Original price $440.00 - Original price $440.00
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    Current price $440.00

    CAS Number: 157698-32-3Synonym: Ethanamine, 2-[4-(1,2-diphenyl-1-butenyl-3,3,4,4,4-d5)phenoxy]-N,N-dimethyl-, (Z)-; Ethanamine, 2-[4-[(1Z)-1,2-diph...

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    Original price $440.00 - Original price $440.00
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    Current price $440.00
  • Catalog No: 1ST160270D8

    Prazosin-d8

    Original price $800.00 - Original price $800.00
    Original price
    $800.00
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    Current price $800.00

    CAS Number: 1006717-55-0Synonym: Methanone, [4-(4-amino-6,7-dimethoxy-2-quinazolinyl)-1-piperazinyl-2,2,3,3,5,5,6,6-d8]-2-furanyl-; [4-(4-Amino-6,7...

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    Original price $800.00 - Original price $800.00
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    $800.00
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    Current price $800.00
  • Catalog No: 1ST10058AD6

    Amitriptyline-d6 hydrochloride

    CAS Number: 203645-63-0

    Original price $100.00 - Original price $100.00
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    CAS Number: 203645-63-0Synonym: 3-(10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-N,N-dimethyl-1-propanamine-d6 Hydrochloride; Adepril-d6; Ami...

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    Original price $100.00 - Original price $100.00
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    Current price $100.00
  • Catalog No: 1ST10504D5

    Bendroflumethiazide-d5

    CAS Number: 1330183-13-5

    Original price $180.00 - Original price $180.00
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    Current price $180.00

    CAS Number: 1330183-13-5Synonym: 1,1-Dioxo-3-[(2,3,4,5,6-pentadeuteriophenyl)methyl]-6-(trifluoromethyl)-3,4-dihydro-2H-benzo[e][1,2,4]thiadiazine-...

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    Original price $180.00 - Original price $180.00
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    $180.00
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    Current price $180.00