CAS 109-99-9 | Sigma-Aldrich

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Synonym(s): Butylene oxide, Oxolane, Tetramethylene oxide, Tetrahydrofuran

Empirical Formula (Hill Notation): C₄H₈O

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	34865	≥99.9%, suitable for HPLC, inhibitor-free
	360589	≥99.0%, ACS reagent, contains 200-400 ppm BHT as inhibitor
	401757	≥99.9%, anhydrous, inhibitor-free
	186562	≥99.9%, anhydrous, contains 250 ppm BHT as inhibitor
	1.08101	≥99.9% (GC), suitable for HPLC, LiChrosolv^®

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Tetrahydrofuran solution

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	680303	contains 20 % (v/v) 1,2-Propanediol

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Synonym(s): Tetrahydrofuran solution

Empirical Formula (Hill Notation): C₄H₈O

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	1601770	United States Pharmacopeia (USP) Reference Standard

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	PHR1064	Pharmaceutical Secondary Standard; Certified Reference Material

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	KITALYSIS-SM

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	48995-U	certified reference material, 9.09 % (v/v)

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	KITALYSISBASE

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	47427-U	2000 μg/mL in methanol, analytical standard

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	KITALYSIS-BOR