Polyisobutylene

Linear Formula:

[CH₂C(CH₃)₂]_n

CAS Number:

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polymers (2)

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Sigma-Aldrich (2)

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pharmaceutical primary standard (1)

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Polyisobutylene, average M_w ~500,000, average M_n ~200,000 by GPC/MALLS, average M_v ~420,000

Polyisobutylene, average M_v ~1,200,000

Polyisobutylene, United States Pharmacopeia (USP) Reference Standard