A
Caffeine, MRFA, and Ultramark 1621 Stock Solutions
Thermo Electron Corporation
LTQ XL Getting Started
141
Stock Solution: Caffeine
A 1 mg/mL stock solution of caffeine in 100% methanol is provided with
your LTQ XL system. This is also the concentration of the Sigma
replacement mentioned in the Note above (Sigma #C6035).
Note
A vial of Ultramark 1621 (neat liquid) is included in the API
accessory kit. This compound is available from Lancaster Synthesis.
The The structure of Ultramark 1621 is ahown below (x is 1, 2, or3).
The Lancaster Ultramark 1621 Catalog Number is 16698 (Ultramark
1621, Mass Spec Std.). To order more of this compound from Lancaster
Synthesis, write or call:
Lancaster Synthesis, Inc.
P.O. Box 1000
Windham, NH USA 03087-9977
(603) 889-3306, (800)-238-2324 (in the USA & Canada)
+44 (0)1524 36101 (UK & International)
www.lancastersynthesis.com
N
P
P
N
N
P
O
O
O
O
O
O
H(CF
2
CF
2
)
x
H
2
C
H(CF
2
CF
2
)
x
H
2
C
H(CF
2
CF
2
)
x
H
2
C
CH
2
(CF
2
CF
2
)
x
H
CH
2
(CF
2
CF
2
)
x
H
CH
2
(CF
2
CF
2
)
x
H
CAUTION
AVOID EXPOSURE TO POTENTIALLY HARMFUL
MATERIALS. Always wear protective gloves when you use solvents or
corrosives. Refer to your supplier's Material Safety Data Sheet (MSDS)
for the proper handling of a particular solvent. Contain waste streams,
and use proper ventilation.
CAUTION
AVOID EXPOSURE TO POTENTIALLY HARMFUL
MATERIALS. Always wear safety glasses when you use solvents or
corrosives. Refer to your supplier's Material Safety Data Sheet (MSDS)
for the proper handling of a particular solvent. Contain waste streams,
and use proper ventilation.
