Reference Standards

British Pharmacopoeia Chemical reference substances (BPCRS)

These Primary standards are established using absolute methods and the declared content figures are determined without comparing to another substance. You should use BPCRS to perform the tests in the British Pharmacopoeia (BP) or BP (Veterinary). Do not eat BPCRS or feed them to animals – you should only use BPCRS for chemical analysis. They are not suitable for any other use.

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945 items

  • Search result 1

    Category Number 601
    Pack size 25 mg
    Substance name 3-aminopent-4-ene-1,1-dicarboxylic acid
    Declared content Not applicable
    Current batch 1955
    Discontinued

  • Search result 2

    Category Number 607
    Pack size 25 mg
    Substance name 3-dimethylaminopropyl 2-benzylaminobenzoate hydrochloride
    Declared content Not applicable
    Current batch 4313
    QTY (Max 25)

  • Search result 3

    Category Number 627
    Pack size 25 mg
    Substance name 3-formylrifamycin SV
    Declared content Not applicable
    Current batch 4289
    QTY (Max 25)

  • Search result 4

    Category Number 239
    Pack size 50 mg
    Substance name 3-methyl-2,2-diphenyl-4-piperidino-butyronitrile
    Declared content Not applicable
    Current batch 600
    E-mail to order:  bpcrs@mhra.gov.uk

  • Search result 5

    Category Number 569
    Pack size 25 mg
    Substance name 3-methylflavone-8-carboxylic acid
    Declared content Not applicable
    Current batch 1978
    Discontinued

  • Search result 6

    Category Number 570
    Pack size 25 mg
    Substance name 3-methylflavone-8-carboxylic acid ethyl ester
    Declared content Not applicable
    Current batch 1979
    Discontinued

  • Search result 7

    Category Number 367
    Pack size 0.1 mL
    Substance name 3-nitroso-3-azabicyclo[3.3.0]octane
    Declared content Not applicable
    Current batch 2235
    Discontinued

  • Search result 8

    Category Number 450
    Pack size 50 mg
    Substance name 3-piperidylpropiophenone hydrochloride
    Declared content Not applicable
    Current batch 4481
    QTY (Max 25)

  • Search result 9

    Category Number 499
    Pack size 25 mg
    Substance name 4'-(2-isopropylaminoethyl)methanesulfonanilide hydrochloride
    Declared content Not applicable
    Current batch 4183
    QTY (Max 25)

  • Search result 10

    Category Number 163
    Pack size 0.5 mL
    Substance name 4'-fluoro-4-chlorobutyrophenone
    Declared content Not applicable
    Current batch 829
    Discontinued

  • Search result 11

    Category Number 770
    Pack size 25 mg
    Substance name 4'-hydroxyacetophenone
    Declared content Not applicable
    Current batch 2796
    QTY (Max 25)

  • Search result 12

    Category Number 557
    Pack size 100 mg
    Substance name 4'-isobutylacetophenone
    Declared content Not applicable
    Current batch 3042
    QTY (Max 25)

  • Search result 13

    Category Number 681
    Pack size 25 mg
    Substance name 4-acetyl-2-fluorobiphenyl
    Declared content Not applicable
    Current batch 2249
    QTY (Max 25)

  • Search result 14

    Category Number 10
    Pack size 50 mg
    Substance name 4-amino-6-chlorobenzene-1,3-disulfonamide
    Declared content Not applicable
    Current batch 2149
    QTY (Max 25)

  • Search result 15

    Category Number 74
    Pack size 25 mg
    Substance name 4-chloro-5-sulfamoylanthranilic acid
    Declared content Not applicable
    Current batch 3767
    QTY (Max 25)

  • Search result 16

    Category Number 604
    Pack size 1
    Substance name 4-chlorobenzylphthalazinone
    Declared content Not applicable
    Current batch
    Discontinued

  • Search result 17

    Category Number 195
    Pack size 25 mg
    Substance name 4-dimethylamino-3-methyl-1,2-diphenylbutan-2-ol hydrochloride
    Declared content Not applicable
    Current batch 2645
    QTY (Max 25)

  • Search result 18

    Category Number 1130
    Pack size 50 mg
    Substance name 4-dodecylresorcinol
    Declared content Not applicable
    Current batch 3616
    Discontinued

  • Search result 19

    Category Number 71
    Pack size 25 mg
    Substance name 4-[2-(5-chloro-2-methoxybenzamido)ethyl]benzenesulfonamide
    Declared content Not applicable
    Current batch 4161
    QTY (Max 25)

  • Search result 20

    Category Number 359
    Pack size 1
    Substance name 5-(6-methoxy-2-naphthyl)-3-methylcyclohexan-1-one
    Declared content Not applicable
    Current batch
    Discontinued

  • Search result 21

    Category Number 965
    Pack size 100 mg
    Substance name 5-chloro-1-methyl-4-nitroimidazole
    Declared content Not applicable
    Current batch 4252
    QTY (Max 25)

  • Search result 22

    Category Number 378
    Pack size 50 mg
    Substance name 5-chloro-2-methylaminobenzophenone
    Declared content Not applicable
    Current batch 3758
    QTY (Max 25)

  • Search result 23

    Category Number 1078
    Pack size 25 mg
    Substance name 5-methoxytryptamine
    Declared content Not applicable
    Current batch 3395
    QTY (Max 25)

  • Search result 24

    Category Number 564
    Pack size 25 mg
    Substance name 5-vinyl-2-pyrrolidone
    Declared content Not applicable
    Current batch 3593
    QTY (Max 25)

  • Search result 25

    Category Number 196
    Pack size 50 mg
    Substance name 5-[1-hydroxy-2-(1-methyl-3-phenylpropylamino)ethyl] salicylic acid hydrochloride
    Declared content Not applicable
    Current batch 4186
    QTY (Max 25)