Cat.
No. Description
Curr.
Lot.
Purity
Value/Conc.
Change
Code*
Previous
Lot/Valid
Use Date
CAS
No. Price
1602003 Resorcinol ( 200 mg) I0D135 0.998 mg/mg (ai) H- 1 (10/05)
H (04/01)
[108-46-3] $204
1602502 Retinyl Palmitate ( 200 mg) F0J106 0.957 mg/mg (ai) [79-81-2] $204
1602706 Ribavirin ( 200 mg) I0G153 0.997 mg/mg (ai) H1C335 (09/08)
H (03/05)
G (08/01)
[36791-04-5] $377
1603006 Riboflavin (500 mg) (Vitamin B2) N1J079 0.986 mg/mg (ai)
(HPLC)
0.997 mg/mg (ai)
(
Spectrophotometric)
N0C021 (10/11)
M- 1 (09/04)
M (11/00)
[83-88-5] $204
1603108 Ribose (300 mg) F0G138 0.999 mg/mg (an) [50-69-1] $204
1603800 Rifabutin ( 50 mg) H0I151 974 ug/mg (ai) G0B040 (01/11)
F (11/02)
[72559-06-9] $204
1604009 Rifampin(300 mg) L0J351 0.985 mg/mg (dr)
(chromatographic)
1.000 mg/mg (dr)
(
Spectrophotometric)
K0G365 (02/12)
J (02/09)
I (09/00)
[13292-46-1] $204
1604202 Rifampin Quinone ( 25 mg) I0I128 H (10/10)
G (12/01)
[13983-13-6] $636
1604337 Riluzole ( 200 mg) F0I206 0.998 mg/mg (ai) [1744-22-5] $242
1604348 Riluzole Related Compound A ( 25 mg) (4-
trifluoromethoxyaniline)
F0I207 [461-82-5] $636
1604508 Rimantadine Hydrochloride (300 mg) G0H143 0.999 mg/mg (dr) F0C266 (03/09) [1501-84-4] $204
1604600 Rimexolone ( 100 mg) F [49697-38-3] $204
1604610 Risedronate Sodium (350 mg) F0I055 0.999 mg/mg (an) [115436-72-1] $204
1604621 Risedronate Related Compound A ( 20 mg) ([1-
hydroxy-2-(2-pyridinyl)ethylidene]bis(phospho-
nic acid))
F0I072 [105462-23-5] $636
1604632 Risedronate Related Compound B ( 20 mg)
([ 3,6-bis[(3-pyridinyl)methyl]- 2,5-dihydroxy- 2,5-
dioxido- 1, 4, 2,5-dioxadiphosphorinane- 3,6-diyl]-
bis[phosphonic acid] disodium tetrahydrate salt)
F0I073 0.97 mg/mg (ai) n/f $636
1604643 Risedronate Related Compound C ( 20 mg) ([2-
(3-pyridinyl)ethylidene- 1, 1]bis(phosphonic acid))
F0I082 [75755-10-1] $636
1604654 Risperidone ( 200 mg) G0J122 0.999 mg/mg (ai) F0G288 (09/11) [106266-06-2
]
$204
1604665 Risperidone System Suitability Mixture ( 10 mg) F0G225 see composition
$636
1604676 Risperidone Related Compounds Mixture
( 25 mg)
F0J004 see composition
$636
1604701 Ritodrine Hydrochloride ( 200 mg) H0G333 0.994 mg/mg (ai) G- 1 (07/09) [23239-51-2] $204
1604803 Ritonavir ( 200 mg) F0F049 0.992 mg/mg (ai) [155213-67-5] $204
1604814 Ritonavir Related Compounds Mixture ( 50 mg) F0F058 [155213-67-5] $636
1604836 Rivastigmine (0.1 mL) F0J302 [123441-03-2] $204
1604858 Rivastigmine Tartrate ( 200 mg) F0I281 0.997 mg/mg (ai) [129101-54-8] $551
1604847 Rivastigmine Tartrate R-Isomer ( 20 mg) ((R)-3-
[1-(Dimethylamino)ethyl]phenyl ethylmethylcar-bamate, hydrogen tartrate)
F0I299 0.99 mg/mg (ai) [415973-05-6] $636
1604869 Rivastigmine Related Compound A ( 15 mg)
((+)-Di-p-toluoyl-D-(+)-tartaric acid)
F0I125 [32634-68-7] $636
January–February 2012 Official USP Reference Standards Catalog 107
*See “How to Read” section for Change Code Interpretation.
www.usp.org Note: Where the Current Lot is blank, the item is not in distribution.
USP Reference Standards and Authentic Substances
