SPL Set ID: 8bf9cf23-8ffc-401f-981d-4878d694a468

Minocycline hydrochloride, a semi synthetic derivative of tetracycline, is [ 4S -(4α,4aα,5aα,12aα)]-4,7-Bis(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10, 12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide mono hydrochloride. The structural formula is represented below: C 23 H 27 N 3 O 7 •HCl M. W. 493.95 Each minocycline hydrochloride extended-release tablet, USP intended for oral administration contains minocycline hydrochloride equivalent to 45 mg, 55 mg, 65 mg, 80 mg, 90 mg, 105 mg, 115 mg or 135 mg of minocycline. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, hypromellose, lactose monohydrate, magnesium stearate, polyethylene glycol (55 mg, 65 mg, 80 mg, 90 mg, 105 mg, 115 mg and 135 mg only), titanium dioxide and triacetin. Additionally, the 45 mg tablets contain ferric oxide black and ferric oxide yellow; the 55 mg tablets contain ferric oxide red and ferric oxide yellow; the 65 mg tablets contain FD & C blue #2 aluminum lake; the 80 mg tablets contain FD & C blue #2 aluminum lake and FD & C red #40 aluminum lake; the 90 mg tablets contain D & C yellow #10 aluminum lake, ferric oxide red and ferric oxide yellow; the 105 mg tablets contain FD & C blue #2 aluminum lake and FD & C red #40 aluminum lake; the 115 mg tablets contain FD & C blue #2 aluminum lake and ferric oxide yellow; the 135 mg tablets contain D & C red #27 aluminum lake, D & C yellow #10 aluminum lake and FD & C blue #2 aluminum lake. USP dissolution test-8 used. USP organic impurities procedure pending. figure