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Home > Analytical Chemistry > Standard (Find 46 items)

Analytical Chemistry

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Standard

Ethiofencarb sulfoxide

(53380-22-6)

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Erythromycin B

(527-75-3)
Erythromycin B (12-deoxyerythromycin A) is a minor co-metabolite of erythromycin produced Saccharopolyspora erythreae. Erythromycin B exhibits broad spectrum antibiotic activity, albeit less potent than erythromycin A. Erythromycin B played an integral part of the SAR studies of semi-synthetic erythromycins, however none reached clinical development.

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Etaconazole

(60207-93-4)
Broad-spectrum systemic fungicide, with protective and therapeutic effects. Especially for citrus storage, it has an excellent effect on the control of penicillium, green mold, pedicle rot, sour rot, brown rot, etc.

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Estradiol-d3

(79037-37-9)
Potent mammalian estrogenic hormone produced by the ovary.

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Erythromycin A Enol Ether

(33396-29-1)
Erythromycin A enol ether is a degradation product of erythromycin formed under acidic conditions by C6–OH internal attack on the C9 ketone to produce a cyclic enol ether. The rearrangement results in a loss of antibiotic activity. This single reaction was the prime driver for the development of second and third generation erythromycins. Erythromycin A enol ether is an important standard for stability studies.

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ent-Rosuvastatin tert-Butyl Ester

(615263-60-0)
A protected enantiomer of Rosuvastatin (R700500).

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Etanidazole

(22668-01-5)
Antineoplastic (hypoxic cell radiosensitizer).

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Equinox

(149979-41-9)
Herbicide.

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Endosulfan ether

(3369-52-6)

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Ethiolate

(2941-55-1)

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In the analysis work, it is often necessary to use a compound of good quality and accurate content, which is used as a comparison for detection control, or used to calibrate the instrument. This compound is called a standard. Or standard. The standard product refers to the standard substance used to determine the potency of biological products. The production department must provide the standard product expressed in units (μ) of its potency when it is approved as a quality standard for biological products. According to the application, the standard products for inspection can be divided into biological standard products for biological verification of biological products, endocrine drugs, antibiotics and so on.

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