Minoxidil IP

General Information

CAS Number Molecular Formula Molecular Weight
38304-91-5 C9H15N5O 209.25 gm/mol

Sales Specification:

Sr. No. Test Parameter Specification
01. Description A White or almost white, Crystalline Powder.
02. Identification
A. Determine by IR Compare the spectrum of Minoxidil WRS.
B. Determine by UV Solution B
Absorption at about 230 nm, 0.406 to 0.448
Absorption at about 281 nm, 0.424 to 0.468

Solution C
Absorption at about 230 nm, 0.610 to 0.674
Absorption at about 262 nm, 0.194 to 0.214
Absorption at about 288 nm, 0.222 to 0.242
C. Determine by TLC The principal spot in the chromatogram obtained with the test solution corresponds to that in the chromatogram obtained with the reference solution.
D. Determine by Chemical Test A green colour develops. The solution becomes greenish yellow on addition of 0.1 ml of 2 M HCl.
03. Solubility Soluble in Methanol and in propylene glycol, Slightly soluble in Water, very slightly soluble in ether, Practically insoluble in Chloroform and in Acetone.
04. Related Substance by HPLC In the chromatography obtained with the test solution the sum of the areas of any secondary peak is not greater than 1.5 times the area of the principal peak in the chromatogram obtained with reference solution (a).
05. Heavy metals NMT 20 ppm
06. Sulfated Ash NMT 0.1 %
07. LOD NMT 0.5%
08. Assay NLT 98.5 % - NMT 101.0 %