1,1-Cyclobutanedicarboxylic acid

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1 Kilogram	Negotiable

1 Kilogram

Negotiable

1,1-Cyclobutanedicarboxylic acid carboplatin Cyclobutanedicarboxylic acid

1,1-Cyclobutanedicarboxylic acid

Cas: 5445-51-2

MF: C6H8O4

Standard:In-house

1,1-Cyclobutanedicarboxylic acid

Cas: 5445-51-2

MF: C6H8O4

Standard:In-house

Item	Acceptance criteria	Result
Description	White to off white crystalline Powder	Conforms
Identification a) By IR b)By HPLC	a)An IR spectrum of sample should be concordant with the reference standard b)The HPLC retention time of sample should be concordant with that of working standard	Conforms Conforms
Solubility	Soluble in water	Conforms
Moisture content(%w/w)	Not more than 0.5	0.3
Melting range(℃)	Between 159.0 and 163.0	159.0-160.5
Assay (By HPLC) (on anhydrous basis(%w/w)	Between 98.0 and 102.0	99.2
Chromatographic purity(%)	Not less than 98.0%	99.2%
CBDA inter (1,1-cyclobutane dicarboxylic acid diethyl ester)(%)	Not more than 0.1	0.03%
Diethyl malonate(%)	Not more than 0.1	0.06%
1,3-Dibromopropane (ppm)	Not more than 50	30PPM
Residual solvent GC)(ppm)	Hexane not more than 290 Ethyl acetate not more than 5000 Ethanol not more than 5000	N.D. 1000PPM N.D.