Errata - English

Line 1 of Standard solution: Change
0.28 mg/mL of USP Erythromycin RS in Medium
to:
Dissolve USP Erythromycin RS in Medium to obtain a concentration similar to that of the Sample solution.
AND
Line 1 of Sample solution: Change
Pass portions of the solution under test through a suitable filter.
to:
If necessary, dilute a filtered portion of the solution under test with Medium to obtain a solution containing about 0.28 mg/mL of erythromycin.

Line 1 of Identification test A: Change
A volume of Injection diluted, if necessary, with water to obtain a test solution of calcium gluconate (1 in 100) responds to Identification test B under Calcium Gluconate.
to:
Dissolve a quantity of it in water to obtain a test solution containing 10 mg per mL, heating in a water bath at 60° if necessary. Similarly, prepare a Standard solution of USP Potassium Gluconate RS in water containing 10 mg per mL. Apply separate 5-µL portions of the test solution and the Standard solution to a suitable thin-layer chromatographic plate (see Chromatography <621>) coated with a 0.25-mm layer of chromatographic silica gel, and allow to dry.Develop the chromatogram in a solvent system consisting of a mixture of alcohol, water, ammonium hydroxide, and ethyl acetate (50: 30: 10: 10) until the solvent front has moved about three-fourths of the length of the plate. Remove the plate from the chamber, and dry at 110° for 20 minutes. Allow to cool, spray with a spray reagent prepared as follows. Dissolve 2.5 g of ammonium molybdate in about 50 mL of 2 N sulfuric acid in a 100-mL volumetric flask, add 1.0 g of ceric sulfate, swirl to dissolve, dilute with 2 N sulfuric acid to volume, and mix. Heat the plate at 110° for about 10 minutes: the principal spot obtained from the test solution corresponds in color, size, and R_F value to that obtained from the Standard solution.

Row 3 of Column 1 of Table 2: Change
Camptothecin^b
to:
Camptothecin^b,d
AND
Row 5 of Column 1: Change
7-Ethylcamptothecin^c
to:
7-Ethylcamptothecin^c,d
AND
Add a footnote:
^dThese process impuritiesare included in the table for identification only and are not included in the Total impurities.

Line 11 of the variable definition list: Change
C_S = concentration of didanosine in the Standard solution (mg/mL)
to:
C_S = concentration of USP Didanosine Related Compound A RS in the Standard solution for the Acid stage or concentration of USP Didanosine RS in the Standard solution for the Buffer stage (mg/mL)

Change
Sample: Standard solution
to:
Samples: System suitability solution and Standard solution
AND
Change
Resolution: NLT 4.0 between tizanidine and tizanidine related compound C; NLT 4.0 between tizanidine and tizanidine related compound B
Tailing factor: NMT 2.0
Relative standard deviation: NMT 2.0%
to:
Resolution: NLT 4.0 between tizanidine and tizanidine related compound C; NLT 4.0 between tizanidine and tizanidine related compound B, System suitability solution
Tailing factor: NMT 2.0, Standard solution
Relative standard deviation: NMT 2.0%, Standard solution

Line 2 of USP Terbinafine Related Compound A RS: Change
N-Methyl-C-(naphthalen-1-yl)methanamine.
to:
N-Methyl-C-(naphthalen-1-yl)methanamine hydrochloride.
AND
Line 2 of USP Terbinafine Related Compound B RS: Change
(2Z)-N,6,6-Trimethyl-N-(naphthalen-1-ylmethyl)hept-2-en-4-yn-1-amine.
to:
(2Z)-N,6,6-Trimethyl-N-(naphthalen-1-ylmethyl)hept-2-en-4-yn-1-amine hydrochloride.
AND
Line 2 of USP Terbinafine Related Compound C: Change
(2E)-N,6,6-Trimethyl-N-(naphthalen-2-ylmethyl)hept-2-en-4-yn-1-amine.
to:
(2E)-N,6,6-Trimethyl-N-(naphthalen-2-ylmethyl)hept-2-en-4-yn-1-amine hydrochloride.
AND
Line 2 of Terbinafine Related Compound D RS: Change
(2E)-N,6,6-Trimethyl-N-[(4-methylnaphthalen-1-yl)methyl]hept-2-en-4-yn-1-amine.
to:
(2E)-N,6,6-Trimethyl-N-[(4-methylnaphthalen-1-yl)methyl]hept-2-en-4-yn-1-amine hydrochloride.

Line 7 of Analysis: Change
R_U = peak response ratio of the doxapram to the internal standard from the Sample solution
R_S = peak response ratio of the doxapram to the internal standard from the Sample solution
to:
R_U = peak response ratio of doxapram to the internal standard from the Sample solution
R_S = peak response ratio of doxapram to the internal standard from the Standard solution

Line 7 of Procedure: Change
(377.86/341.41)10C(r_U/r_S)
in which 377.86 and 341.41 are the molecular weights of naltrexone hydrochloride and naltrexone
to:
(377.86/341.40)10C(r_U/r_S)
in which 377.86 and 341.40 are the molecular weights of naltrexone hydrochloride and naltrexone

Line 6 of 6.50.20. Solutions: Change
An expression such as “(1 in 10)” means that 1 part by volume of a liquid shall be diluted with a sufficient quantity of the diluent or solvent to make the volume of the finished solution 10 parts by volume. An expression such as “(20:5:2)” means that the respective numbers of parts, by volume, of the designated liquids shall be mixed, unless otherwise indicated.
to:
An expression such as “(1 in 10)” means that 1 part by volume of a liquid shall be diluted with, or 1 part by weight of a solid shall be dissolved in, a sufficient quantity of the diluent or solvent to make the volume of the finished solution 10 parts by volume. An expression such as “(20:5:2)” means that the respective numbers of parts, by volume, of the designated liquids shall be mixed, unless otherwise indicated.