The following standards of dyes, used in the pharmaceutical and food industry, are listed with common description, E code and color index number (C.I.) for an easy assignment.
The Commission on Pharmaceutical Enzymes was formed in 1960, with a remit to establish quantitative methods and an exact definition of enzyme activity for pharmacological significant enzymes. One consequence of the work of FIP (Federation International Pharmaceutique) has been the production and certification of reference substances for both enzymes and substrates. More recently the work of the Commission has been reflected in those monographs of the European Pharmacopoeia which call for enzyme standards. The FIP products marked (EP) in this list are those which are required in certain EP monographs.
The World Health Organization (WHO), a specialized agency of the United Nations with a primary responsibility for international health matters and public health, is the issuing body of the substances described in the International Pharmacopoeia. Progress towards better health requires international cooperation in the establishment of international standards for biological substances and pharmaceuticals. The WHO has therefore authorized the establishment and maintenance of a number of reference collections.
10 liquid CRMs, certified by the Physical Chemical Division of the Central Office of Measures (GUM), Warsaw, Poland, covers the wide range of refractive index from 1.333 (water) to 1.657 (1-bromonaphthalene).
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Product Number: WHO9930188
(-)-3-(4-Hydroxy-3-methoxyphenyl)-2-hydrazino-2-me
$275.00
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Product Number: WHO9930189
(-)-3-(4-Hydroxy-3-methoxyphenyl)-2-methylalanine
$275.00
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Product Number: PRG7.8
1-Bromonapthalene Refractive Index - 1.657 at 20°
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Product Number: PRG7.1
2,2,4-Trimethylpentane Refractive Index - 1.391
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Product Number: WHO9930190
2-(4-Chloro-3-sulfamoylbenzoyl)benzoic acid
$275.00
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Product Number: WHO9930191
2-Amino-5-nitrothiazole
$275.00
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Product Number: WHO9930193
3-Amino-2,4,6-triiodobenzoic acid
$275.00
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Product Number: WHO9930194
3-Aminopyrazole-4-carboxamide hemisulfate
$275.00
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Product Number: WHO9930195
3-Formylrifamycin
$275.00
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Product Number: WHO9930196
4,4' - Thiodianiline
$275.00
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