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Pyromellitic dianhydride (PMDA)

99%

89-32-7 C10H2O6 218.12 g./mol

฿900.00

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4,4'-Oxydiphthalic anhydride

97%

1823-59-2 C₁₆H₆O₇ 310.21 g./mol

฿300.00

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Colloidal chitin

Colloidal chitin

฿2,223.81

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Analytical

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