Errata - English

Change
Buffer, Mobile phase, Diluent, and Sample solution: Prepare as directed in the Assay.
to:
Buffer, Mobile phase, and Diluent: Prepare as directed in the Assay.
AND
Add
Sample solution: Use the Sample stock solution as directed in the Assay.

Line 2 of USP Promethazine Related Compound B RS: Change
Isopromethazine;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine.
C₁₇H₂₀N₂S 284.42
to:
Isopromethazine hydrochloride;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine hydrochloride.
C₁₇H₂₀N₂S · HCl 320.88

Line 2 of USP Theophylline Related Compound D RS: Change
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide.
C₆H₁₀N₄O 154.17
to:
Theophyllidine;
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate.
C₆H₁₀N₄O · HCl · H₂O 208.65

Row 4 of Column 1 of Procedure 1/Impurity Table 1:Change
Efavirenz pent-3-ene-1-yne (cis)^c
to:
Efavirenz pent-3-ene-1-yne (trans)^c
AND
Row 5 of Column 1 of Procedure 1/Impurity Table 1:Change
Efavirenz pent-3-ene-1-yne (trans)^d
to:
Efavirenz pent-3-ene-1-yne (cis)^d
AND
Row 3 of Column 1 of Procedure 2/Impurity Table 2: Change
Efavirenz pent-3-ene-1-yne (cis)^a
to:
Efavirenz pent-3-ene-1-yne (trans)^a
AND
Row 4 of Column 1 of Procedure 2/Impurity Table 2:Change
Efavirenz pent-3-ene-1-yne (trans)^b
to:
Efavirenz pent-3-ene-1-yne (cis)^b

Line 16 of Analysis: Delete
Calculate the percentage of any unspecified impurity in the portion of Tetracycline Hydrochloride taken:
Result = (r_U/r_S) × (C_S/C_U) × 100
r_U = peak response of any unspecified impurity from the Sample solution
r_S = peak response of tetracycline from the Standard solution
C_S = concentration of USP Tetracycline Hydrochloride RS in the Standard solution (µg/mL)
C_U = concentration of Tetracycline Hydrochloride in the Sample solution (µg/mL)

Line 2 of USP Promethazine Related Compound B RS: Change
Isopromethazine;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine.
C₁₇H₂₀N₂S 284.42
to:
Isopromethazine hydrochloride;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine hydrochloride.
C₁₇H₂₀N₂S · HCl 320.88

Line 3 of USP Theophylline Related Compound D RS: Change
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide.
C₆H₁₀N₄O 154.17
to:
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate.
C₆H₁₀N₄O · HCl · H₂O 208.65

Line 2 of USP Theophylline Related Compound D RS: Change
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide.
C₆H₁₀N₄O 154.17
to:
Theophyllidine;
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate.
C₆H₁₀N₄O · HCl · H₂O 208.65

In the first variable definition list in Analysis: Change
C_S = concentration of USP Clotrimazole RS in the Clotrimazole stock solution (mg/mL)
to:
C_S = concentration of USP Clotrimazole RS in the Standard solution (mg/mL)
AND
In the second variable definition list in Analysis: Change
C_S = concentration of USP Betamethasone Dipropionate RS in the Betamethasone dipropionate stock solution (mg/mL)
to:
C_S = concentration of USP Betamethasone Dipropionate RS in the Standard solution (mg/mL)

Line 6 of Analysis: Change
Result_i = (r_i/r_s) × C_s × [M × (M_r1/M_r2)] × V x (1/L) × 100
to:
Result_i = (r_i/r_s) × C_s × [M × (M_r1/M_r2)] × D × V × (1/L) × 100
AND
To the variable definition list in Analysis: Add
D = dilution factor of the Sample solution

Line 2 of USP Theophylline Related Compound D RS: Change
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide.
C₆H₁₀N₄O 154.17
to:
Theophyllidine;
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate.
C₆H₁₀N₄O · HCl · H₂O 208.65

Line 2 of USP Brinzolamide Related Compound B RS: Change
(R-4-Amino)-2,3-dihydro-2-(3-methoxypropyl)-4H-thieno[3,2,-e]-thiazine-6-sulfonamide-1,1-dioxide ethandioate 1:1.
to:
(R)-4-Amino-2-(3-methoxypropyl)-3,4-dihydro-2H-thieno[3,2-e][1,2]thiazine-6-sulfonamide 1,1-dioxide oxalate.

Line 2 of paragraph 1 of Operational Qualification: Change
OQ demonstrates fitness for the selected use, and should reflect the contents of the DQ document.
to:
OQ demonstrates fitness for the selected use, and should reflect URS.
AND
Line 2 of paragraph 3 of Operational Qualification/Instrument Function Tests: Change
Holistic tests, which involve the entire system, demonstrate that the whole system complies with user specifications in the DQ.
to:
Holistic tests, which involve the entire system, demonstrate that the whole system complies with URS.

Line 5 of Analysis: Change
Result = (r_U/r_S) × (C_S/C_U) × (M_r1/M_r2) × 100
to:
Result = (r_U/r_S) × (C_S/C_U) × 100
AND
Line 14 of Analysis: Delete
M_r1=molecular weight of anhydrous entecavir, 277.28
M_r2=molecular weight of entecavir, 295.29

Line 2 of USP Promethazine Related Compound B RS: Change
Isopromethazine;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine.
C₁₇H₂₀N₂S 282.42
to:
Isopromethazine hydrochloride;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine hydrochloride.
C₁₇H₂₀N₂S · HCl 320.88

Line 3 of USP Theophylline Related Compound D RS: Change
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide.
C₆H₁₀N₄O 154.17
to:
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate.
C₆H₁₀N₄O · HCl · H₂O 208.65

In the variable definition list in Analysis: Change
C_S = concentration of USP Clotrimazole Related Compound A RS in the Clotrimazole related compound A stock solution (mg/mL)
to:
C_S = concentration of USP Clotrimazole Related Compound A RS in the Standard solution (mg/mL)

Line 2 of USP Promethazine Related Compound B RS: Change
Isopromethazine;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine.
C₁₇H₂₀N₂S 282.42
to:
Isopromethazine hydrochloride;
N,N-Dimethyl-2-(10H-phenothiazin-10-yl)propan-1-amine hydrochloride.
C₁₇H₂₀N₂S · HCl 320.88

Line 2 of USP Theophylline Related Compound D RS: Change
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide.
C₆H₁₀N₄O 154.17
to:
Theophyllidine;
N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate.
C₆H₁₀N₄O · HCl · H₂O 208.65

Line 2 of USP Brinzolamide Related Compound B RS: Change
(R-4-Amino)-2,3-dihydro-2-(3-methoxypropyl)-4H-thieno[3,2,-e]-thiazine-6-sulfonamide-1,1-dioxide ethandioate 1:1.
to:
(R)-4-Amino-2-(3-methoxypropyl)-3,4-dihydro-2H-thieno[3,2-e][1,2]thiazine-6-sulfonamide 1,1-dioxide oxalate.

Line 1 of Physicochemical Tests/Acidity or Alkalinity/BRP indicator solution: Change
1.0 mg/mL of bromophenol blue,
to:
1.0 mg/mL of bromothymol blue,
AND
Line 3 of Plastic Additives/Polyethylene, Cyclic Olefins, and Polypropylene/Phenolic Antioxidants/Test B: Change
tris(2,4-di-tert-butylphenyl) phosphate;
to:
tris(2,4-di-tert-butylphenyl) phosphite;
AND
Line 1 of Plastic Additives/Polyethylene, Cyclic Olefins, and Polypropylene/Phenolic Antioxidants/Test C/Mobile phase: Change
(55:45:5, v/v/v)
to:
(50:45:5, v/v/v)
AND
Line 1 of Plastic Additives/Polyethylene, Cyclic Olefins, and Polypropylene/Nonphenolic Antioxidants/Chromatographic system/Application: Change
20 µL of Sample solution S10, reference solution (o) and the reference solutions corresponding to
to:
20 µL of Sample solution S10 and the reference solutions corresponding to
AND
Line 2 of Plastic Additives/Plasticized Polyvinyl Chloride/USP Reference Standards <11>/USP Plastic Additive 05 RS: Change
Tris(2,4-di-tert-butylphenyl) phosphate.
to:
Tris(2,4-di-tert-butylphenyl) phosphite.  

Line 14 of Analysis: Change
M_r1 = molecular weight of betaxolol hydrochloride, 343.89
M_r2 = molecular weight of betaxolol, 307.43
to:
M_r1 = molecular weight of betaxolol, 307.43
M_r2 = molecular weight of betaxolol hydrochloride, 343.89

Line 1 of Procedure: Change
Proceed as directed for Procedure in the test for Related glycosides under Digoxin, except to omit the use of the Gitoxin standard solution.
to:
Apply 10 µL of the Test solution and 10 µL of the Standard solution on a line parallel to and about 2.5 cm from the bottom edge of a reversed-phase thin-layer chromatographic plate coated with a 0.25-mm layer of chromatographic silica gel mixture to which is permanently bonded octadecylsilane (C18). Allow the spots to dry, and place the plates in a developing chamber containing a mixture of methanol and water (7:3). Develop the chromatogram until the solvent front has moved about 15 cm above the line of application. Remove the plate, and allow the solvent to evaporate. Spray the plate with Chloramine T–trichloroacetic acid reagent, freshly mixed, and heat in an oven at 110° for 10 minutes.

Line 2 of USP Ciprofloxacin Ethylenediamine Analog RS: Change
7-(2-Aminoethylamino)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid.
C₁₅H₁₆FN₃O₃ 305.30
to:
1-Cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-[(2-aminoethyl)amino]-3-quinolinecarboxylic acid hydrochloride.
C₁₅H₁₆FN₃O₃ · HCl 341.77