Polymorphic forms of nateglinide

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Reexamination Certificate

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Reexamination Certificate

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07420084

ABSTRACT:
Provides are crystalline forms of nateglinide, labeled Forms A, C, D, F, G, I, J, K, L, M, N, 0, P, Q, T, U, V, Y, α, β, γ, δ, ε, σ, θ and Ω, processes for their preparation and processes for preparation of other crystalline forms of nateglinide. Also provided are their pharmaceutical formulations and methods of administration.

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Li Gang et al., “Found a New Crystal Structure in Nateglinide by X-ray Powder Diffraction,” Chinese Journal of Pharmaceutical Analysis, vol. 21, No. 5, 2001, pp. 342-344.
A nateglinide having the enclosed XRD (see fig. 17) was purchased before Jul. 3, 2002 in a foreign country from a supplier in another foreign country.

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