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1) Description Small, white to slightly yellow crystals or crystalline powder, which darken slowly on exposure to light. 2) Solubility Freely soluble in chloroform; very slightly soluble in ethanol …
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1) Description Small, white to slightly yellow crystals or crystalline powder, which darken slowly on exposure to light. 2) Solubility Freely soluble in chloroform; very slightly soluble in ethanol (95%); practically insoluble in ether and in water. 3) Identification The infra-red absorption spectrum is concordant with the reference spectrum of reserpine or with the spectrum obtained from reserpine RS. 4) Specific optical rotation -116° to -128° 6) Oxidation products(0.02 %, 1 cm, 388 nm) NMT 0.10 7) Sulphated ash NMT 0.1% 8) Assay A) Total alkaloids B) Reserpine 99.0 -101% 98.0 -102%
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