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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: 1ST169066D5

    Resiquimod-d5

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

    Metformin-d6 hydrochloride

    CAS Number: 1185166-01-1

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

    Diphenhydramine-d6 hydrochloride

    CAS Number: 1189986-72-8

    Original price $145.00 - Original price $145.00
    Original price
    $145.00
    $145.00 - $145.00
    Current price $145.00

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

    Rilmenidine-d4

    Original price $260.00 - Original price $260.00
    Original price
    $260.00
    $260.00 - $260.00
    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
    Original price
    $260.00
    $260.00 - $260.00
    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
    Original price
    $600.00
    $600.00 - $600.00
    Current price $600.00

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

    Clomipramine-d3 hydrochloride

    CAS Number: 1398065-86-5

    Original price $280.00 - Original price $280.00
    Original price
    $280.00
    $280.00 - $280.00
    Current price $280.00

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

    N-Desmethyl sildenafil-d8

    CAS Number: 1185168-06-2

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

    Tamoxifen-d5

    CAS Number: 157698-32-3

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

    Prazosin-d8

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

    Amitriptyline-d6 hydrochloride

    CAS Number: 203645-63-0

    Original price $100.00 - Original price $100.00
    Original price
    $100.00
    $100.00 - $100.00
    Current price $100.00

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

    Bendroflumethiazide-d5

    CAS Number: 1330183-13-5

    Original price $180.00 - Original price $180.00
    Original price
    $180.00
    $180.00 - $180.00
    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
    Original price
    $180.00
    $180.00 - $180.00
    Current price $180.00
  • Catalog No: 1ST169708D4

    Etravirine-d4

    CAS Number: 1142095-93-9

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

    CAS Number: 1142095-93-9Synonym: Benzonitrile-2,3,5,6-d4, 4-[[4-amino-5-bromo-6-(4-cyano-2,6-dimethylphenoxy)-2-pyrimidinyl]amino]-; 4-[[4-Amino-5-...

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    Original price $260.00 - Original price $260.00
    Original price
    $260.00
    $260.00 - $260.00
    Current price $260.00
  • Catalog No: 1ST11368D4

    Felbamate-d4

    CAS Number: 106817-52-1

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

    CAS Number: 106817-52-1Synonym: 2-Phenyl-1,3-propanedioldicarbamate-d4; Carbamic Acid 2-Phenyltrimethylene-d4 Ester; ADD-03055-d4; W-554-d4; Felbam...

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    Original price $180.00 - Original price $180.00
    Original price
    $180.00
    $180.00 - $180.00
    Current price $180.00
  • Catalog No: 1ST7157D3

    Ibuprofen-d3

    CAS Number: 121662-14-4

    Original price $150.00 - Original price $150.00
    Original price
    $150.00
    $150.00 - $150.00
    Current price $150.00

    CAS Number: 121662-14-4Synonym: α-Methyl-d3-4-(isobutyl)phenylacetic acidFormula: C13H15D3O2Molecular Weight: 209.3Purity: NAForm: SolidColor: Whit...

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    Original price $150.00 - Original price $150.00
    Original price
    $150.00
    $150.00 - $150.00
    Current price $150.00
  • Catalog No: 1ST11348

    Nortriptyline-d3 hydrochloride

    Original price $600.00 - Original price $600.00
    Original price
    $600.00
    $600.00 - $600.00
    Current price $600.00

    CAS Number: 203784-52-5Synonym: 3-(10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-N-(methyl-d3)-1- propanamine Hydrochloride; Acetexa-d3; Alle...

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    Original price $600.00 - Original price $600.00
    Original price
    $600.00
    $600.00 - $600.00
    Current price $600.00
  • Catalog No: 1ST10246D3

    Tadalafi-d3

    CAS Number: 960226-55-5

    Original price $500.00 - Original price $500.00
    Original price
    $500.00
    $500.00 - $500.00
    Current price $500.00

    CAS Number: 960226-55-5Synonym: (6R,12aR)-6-(1,3-benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-(methyl-d3)-pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,...

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    Original price $500.00 - Original price $500.00
    Original price
    $500.00
    $500.00 - $500.00
    Current price $500.00
  • Catalog No: 1ST10775D3

    Omeprazole-d3

    Original price $500.00 - Original price $500.00
    Original price
    $500.00
    $500.00 - $500.00
    Current price $500.00

    CAS Number: 922731-01-9Synonym: 5-(Methoxy-d3)-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-be nzimidazole; rac- Esomeprazole-d3; 5-...

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    Original price $500.00 - Original price $500.00
    Original price
    $500.00
    $500.00 - $500.00
    Current price $500.00
  • Catalog No: 1ST10920D5

    Clobazam-d5

    CAS Number: 129973-76-8

    Original price $600.00 - Original price $600.00
    Original price
    $600.00
    $600.00 - $600.00
    Current price $600.00

    CAS Number: 129973-76-8Synonym: 1H-1,5-Benzodiazepine-2,4(3H,5H)-dione, 7-chloro-1-methyl-5-(phenyl-d5)- (9CI)Formula: C16H8ClD5N2O2Molecular Weigh...

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    Original price $600.00 - Original price $600.00
    Original price
    $600.00
    $600.00 - $600.00
    Current price $600.00
  • Catalog No: 1ST10241AD6

    Venlafaxine-d6 hydrochloride

    CAS Number: 1062606-12-5

    Original price $220.00 - Original price $220.00
    Original price
    $220.00
    $220.00 - $220.00
    Current price $220.00

    CAS Number: 1062606-12-5Synonym: 1-[2-[di(methyl-d3)amino]-1-(4-methoxyphenyl)ethyl]-cyclohexanol, monohydrochlorideFormula: C17H21D6NO2·HClMolecul...

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    Original price $220.00 - Original price $220.00
    Original price
    $220.00
    $220.00 - $220.00
    Current price $220.00
  • Catalog No: 1ST10434D4

    9-Hydroxyrisperidone-d4

    CAS Number: 1020719-55-4

    Original price $800.00 - Original price $800.00
    Original price
    $800.00
    $800.00 - $800.00
    Current price $800.00
    In stock

    CAS Number: 1020719-55-4Synonym: Paliperidone-d4 9-Hydroxyrisperidone-d4Formula: C23H23D4FN4O3Molecular Weight: 430.51Purity: 98+%Form: NAColor:...

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    Original price $800.00 - Original price $800.00
    Original price
    $800.00
    $800.00 - $800.00
    Current price $800.00
  • Catalog No: 1ST20526

    Desbrom-leptophos

    CAS Number: 53490-78-1

    Original price $150.00 - Original price $150.00
    Original price
    $150.00
    $150.00 - $150.00
    Current price $150.00
    In stock

    CAS Number: 53490-78-1Synonym: (±)-Debromoleptophos; Debromoleptophos; O-(2,5-Dichlorophenyl) O-Methyl phenylphosphonothioate;Formula: C13H11Cl2O2P...

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    Original price $150.00 - Original price $150.00
    Original price
    $150.00
    $150.00 - $150.00
    Current price $150.00
  • Catalog No: 1ST5705A

    Ciprofloxacin-d8 hydrochloride

    CAS Number: 1216659-54-9

    Original price $200.00 - Original price $200.00
    Original price
    $200.00
    $200.00 - $200.00
    Current price $200.00
    In stock

    CAS Number: 1216659-54-9Synonym: Ciprofloxacin-d8 hydrochloride (piperazine-d8)Formula: C17D8H10FN3O3 · HClMolecular Weight: 375.86Purity: 98+%Form...

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    Original price $200.00 - Original price $200.00
    Original price
    $200.00
    $200.00 - $200.00
    Current price $200.00
  • Catalog No: 1ST21180

    Flusilazole

    CAS Number: 85509-19-9

    Original price $100.00 - Original price $100.00
    Original price
    $100.00
    $100.00 - $100.00
    Current price $100.00
    In stock

    CAS Number: 85509-19-9Synonym: NAFormula: C16H15F2N3SiMolecular Weight: 315.39Purity: 98+%Form: SolidColor: NAStorage Condition: 2-8°CTransportatio...

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    Original price $100.00 - Original price $100.00
    Original price
    $100.00
    $100.00 - $100.00
    Current price $100.00
  • Catalog No: 1ST161151

    12-Ketodeoxycholic acid

    CAS Number: 5130-29-0

    Original price $100.00 - Original price $100.00
    Original price
    $100.00
    $100.00 - $100.00
    Current price $100.00
    In stock

    CAS Number: 5130-29-0Synonym: 12-Oxolithocholic acid; 12-Ketodeoxycholic acid; 12-Dehydrodeoxycholic acidFormula: C24H38O4Molecular Weight: 390.56P...

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    Original price $100.00 - Original price $100.00
    Original price
    $100.00
    $100.00 - $100.00
    Current price $100.00