Showing posts with label OtBu Esters. Show all posts
Showing posts with label OtBu Esters. Show all posts

17.11.21

CAS#306776-79-4 DOTA-GA(tBu)4/DOTAGA-tertra(tBu-ester) MFCD32011828 | 96367

 
IUPAC: 5-(tert-butoxy)-5-oxo-4-{4,7,10-tris[2-(tert-butoxy)-2-oxoethyl]-1,4,7,10-tetraazacyclododecan-1-yl}pentanoic acid
SynonymsDOTAGA-(COOt-Bu)4
CAT96367
CAS306776-79-4
MDLMFCD32011828
M. FormulaC35H64N4O10
M.W.700.915
Quantities0.1g, 0.25, 1g, 5g, 10g, 25g, 50g, 100g, 250g or Pack on demand;  Stock Status: Usual in stock
InChIKeySUAUFMLRKFUOID-UHFFFAOYNA-N
EnantiomerN/A

20.12.20

CAS#137076-54-1 DOTA-tris(tBu Ester) MFCD02259697 | 99583

 

IUPAC: 2-{4,7,10-tris[2-(tert-butoxy)-2-oxoethyl]-1,4,7,10-tetraazacyclododecan-1-yl}acetic acid

SynonymsDOTA-tris(t-Bu Ester); Tri-tert-butyl 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetate;DOTA-tris(tBu)ester; 2-[4,7,10-tris[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]-1,4,7,10-tetrazacyclododec-1-yl]acetic acid; (4,7,10-Tris-tert-butoxycarbonylmethyl-1,4,7,10tetraaza-cyclododec-1-yl)-acetic acid; Tri-tert-butyl 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetate; DOTA-tris(tert-butyl ester); 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraaceticacid,1,4,7-tris(1,1-dimethylethyl)ester
CAT99583
CAS137076-54-1
MDLMFCD02259697
M. FormulaC28H52N4O8
M. Weight572.744
Quantities0.1g, 0.25, 1g, 5g, 10g, 25g, 50g, 100g, 250g or Pack on demand;  Stock Status: Maintained in stock
InChIKeyRVUXZXMKYMSWOM-UHFFFAOYSA-N
EnantiomerN/A

27.9.19

CAS#912354-06-4 (S)-Fmoc-2-Amino-6-tert-butoxy-5-(tert-butoxycarbonyl)-6-Oxohexanoic Acid MFCD18782832 | 25419

(2S)-6-(tert-butoxy)-5-[(tert-butoxy)carbonyl]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-6-oxohexanoic acid

Synonyms
(S)-Fmoc-2-amino-5-tert-butoxycarbonyl-hexanedioic acid-6-tert-butyl ester
CAT#
25419
CAS#
912354-06-4
MDL#
MFCD18782832
Molar Formula
C30H37NO8
Molar Weight
539.625
SMILES
CC(C)(C)OC(=O)C(CC[C@H](NC(=O)OCC1C2=C(C=CC=C2)C2=C1C=CC=C2)C(O)=O)C(=O)OC(C)(C)C
InChIKey
AVJAHYACUFCSKY-DEOSSOPVSA-N
Enantiomer
(R)-Fmoc-2-Amino-6-tert-butoxy-5-(tert-butoxycarbonyl)-6-Oxohexanoic Acid
Quality
Analysis like HNMR, Purity, MS, Chirality, Specific Rotation, IR, M.P., K.F., LOD etc. May be Fully or Selectively Done.

30.8.19

CAS#1416853-35-4 Fmoc-D-Thr-OtBu | 36245

tert-butyl (2R,3S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanoate

Synonyms
Fmoc-D-threonine tert-butyl ester
CAT
36245
CAS
1416853-35-4
MDL

Formula
C23H27NO5
M.W.
397.471
SMILES
C[C@H](O)[C@@H](NC(=O)OCC1C2=C(C=CC=C2)C2=C1C=CC=C2)C(=O)OC(C)(C)C
Inchi Key
LMRQPSBMLDCJGN-VBKZILBWSA-N
Inquiry
Usage
For the R&D use only, strictly not permitted for drug use.

CAS#120791-76-6 Fmoc-Thr-OtBu MFCD08276378 | 36227

tert-butyl (2S,3R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanoate
Synonyms
Fmoc-L-Thr-OtBu; Fmoc-L-Threonine tert-butyl Ester
CAT
36227
CAS
120791-76-6
MDL
MFCD08276378
Formula
C23H27NO5
M.W.
397.471
SMILES
C[C@@H](O)[C@H](NC(=O)OCC1C2=C(C=CC=C2)C2=C1C=CC=C2)C(=O)OC(C)(C)C
Inchi Key
LVCNVFJKZNYDMY-VWLOTQADSA-N
Inquiry
Usage
For the R&D use only, strictly not permitted for drug use.

24.3.15

Z-Glu-OtBu CAS#5891-45-2 (GLB ID-11511)

(S)-4-(((benzyloxy)carbonyl)amino)-5-(tert-butoxy)-5-oxopentanoic acid
Product Synonyms
Z-Glu-OtBu; Z-L-Glutamic Acid α-Tert-Butyl Ester
Appearance
White to off-white Powder
GLB ID#
11511
CAS#
5891-45-2
MDL#
MFCD00077016
PubChem CID
InChIKey
VJECGKAFPHEJQS-ZDUSSCGKSA-N
Formula
C17H23NO6
M.W.
337.4
Purity
≥98%
Specific Rotation[a]20/D
-25°±2° (C=2 in MeOH)
Optical Purity
Can be measured upon the request but a fee may be charged
Melting Point
78-88°C
Solubility
0.3gram in 2ml MeOH clear solution
Water Content (K.F.)
≤1.0%
Loss on drying
≤1.0%(35°C, 2h)
IR Spectrum
Complies
MS Spectrum
Complies
NMR Spectrum
Complies
Packaging
1g, 5g, 25g, 100g, 1kg, 5kg..... or on request 
Storage
Keep cool & dry under <25°C upon the receipt of goods
Price
Use
For the R&D purpose only, strictly not permitted for drug use.

11.2.15

H-Gln-OtBu·HCl CAS#39741-62-3 (GLB ID-16810)

(S)-tert-butyl 2,5-diamino-5-oxopentanoate hydrochloride
Product Name
H-Gln-OtBu·HCl;L-Glutamine Alpha-Tert-Butyl Ester Hydrochloride 
GLB ID#
16810
CAS#
39741-62-3
MDL#
MFCD00039081
Formula
C9H19ClN2O3
M.W.
238.72
Appearance
White to off-white powder
Purity
≥98%
Specific Rotation[a]20/D
One measured ~+15.2° (C=2 in H2O)
Optical Purity
Not measured
Melting Point
Not measured
Solubility
0.3gram in 2ml H2O clear solution
Water Content (K. F.)
≤1.0%
Loss on drying
≤1.0% (65°C, 2h)
IR Spectrum
Complies
MS Spectrum
Complies
NMR Spectrum
Complies
Packaging
5g, 25g, 100g, 250g, 1kg, 2kg, 5kg, 20kg... or on request 
Storage
Keep cool & dry under <25oupon the receipt of goods
Price
Use
For the research and development purpose only

12.10.14

CAS#91183-71-0 H-Met-OtBu.HCl MFCD00038896 | 10826

(S)-tert-butyl 2-amino-4-(methylthio)butanoate hydrochloride
Product Name
H-Met-OtBu·HCl; L-Methionine Tert-Butyl Ester Hydrochloride
GLB ID#
10826
CAS#
91183-71-0
MDL#
MFCD00038896 MFCD00229588
Formula
C9H20ClNO2S
M.W.
241.7
Appearance
White to off-white powder
Purity
≥97%
Specific Rotation[a]20/D
~+9-+11°(C=1 in DMF) 
Optical Purity
Not measured
Melting Point
~150°
Solubility
0.3gram in 2ml DMF clear solution
Water Content (K. F.)
≤1.0% 
Loss on drying
≤1.0%(70°C, 2h)
IR Spectrum
Complies
MS Spectrum
Complies
NMR Spectrum
Complies
Packaging
1g, 5g, 25g, 50g, 100g, 250g.... or on request 
Storage
Keep cool & dry under 25o upon the receipt of goods
Price
Use
For the research and development purpose only

21.9.14

H-Asn-OtBu CAS#25456-86-4 (GLB ID-13042)

(S)-tert-butyl 2,4-diamino-4-oxobutanoate
Product Name
H-Asn-OtBu; L-Asparagine Tert-Butyl Ester
GLB ID#
13042
CAS#
25456-86-4
MDL#
MFCD00190755 
Formula
C8H16N2O3
M.W.
188.20
Appearance
White to off-white powder
Purity
≥98%
Specific Rotation[a]20/D
Once measured at ~+22°(C=1 in AcOH) 
Optical Purity
Not Determined
Melting Point
~100°
Solubility
0.3gram in 2ml MeOH clear solution
Water Content (K. F.)
≤1.0% 
Loss on drying
≤1.0%(50°C, 2h)
IR Spectrum
Complies
MS Spectrum
Complies
NMR Spectrum
Complies
Packaging
5g, 25g, 100g, 250g, 500g, 1kg, 5kg,.... or on request 
Storage
Keep dry under 25o upon the receipt
Price
Use
For the research and development purpose only

3.9.14

H-Asp-OtBu CAS#4125-93-3 (GLB ID-11023)

(S)-3-amino-4-(tert-butoxy)-4-oxobutanoic acid
Product Name
H-Asp-OtBu
GLB ID#
11023
CAS#
4125-93-3
MDL#
MFCD00171675
Formula
C8H15NO4
M.W.
189.2
Appearance
White to off-white powder
Purity
≥98%
Specific Rotation[a]20/D
+3.6°(C=1 in AcOH)
Optical Purity
Not Determined
Melting Point
Not Determined
Solubility
0.3gram in 2ml 1N HCl clear solution
Water Content (K. F.)
≤2.0%
Loss on drying
≤2.0%(50°C, 2h)
IR Spectrum
Complies
MS Spectrum
Complies
NMR Spectrum
Complies
Packaging
1g, 5g, 25g, 100g, 500g.... or on request 
Storage
Keep dry under 25o upon the receipt
Price
Use
For the research and development purpose only

2.9.14

Boc-Gly-OtBu CAS#111652-20-1 (GLB ID-30709)

tert-butyl 2-((tert-butoxycarbonyl)amino)acetate
Product Name
Boc-Gly-OtBu
GLB ID#
30709
CAS#
111652-20-1
MDL#
MFCD00191866
Formula
C11H21NO4
M.W.
231.3
Appearance
White to off-white powder
Purity
≥98%
Specific Rotation[a]20/D
Not Determined
Optical Purity
Not Determined
Melting Point
Not Determined
Solubility
0.3gram in 2ml DMF clear solution
Water Content (K. F.)
≤1.0%
Loss on drying
≤1.0%(35°C, 2h)
IR Spectrum
Complies
MS Spectrum
Complies
NMR Spectrum
Complies
Packaging
1g, 5g, 25g, 100g, 500g,.... or on request 
Storage
Keep dry under 25o upon the receipt
Price
Use
For the research and development purpose only

29.7.14

Fmoc-Asp-OtBu CAS#129460-09-9 (GLB ID-36510)

Fmoc-L-Aspartic Acid Alpha-Tert-Butyl Ester
Product
Fmoc-Asp-OtBu
GLB ID#
36510
CAS#
129460-09-9
MDL#
MFCD00065631
Formula
C23H25NO6
M.W.
411.5
Appearance
White to off-white powder
Purity
≥98%
Specific Rotation[a]20/D
-23o±2.5o (C=1 in DMF)
Optical Purity
Not Determined
Melting Point
100-118oC
Solubility
0.3 gram in 2ml DMF clear solution
NMR Spectrum
Complies
Packaging
5g, 25g,1 00g, 250g, 500g, 1kg, 10kg.... or on request 
Storage
Keep dry under 25o upon the receipt
Price
Use
For the research and development purpose only

23.7.14

H-D-Leu-OtBu·HCl CAS#13081-32-8 (GLB ID-11842)

D-Leucine-Tert-butyl Ester Hydrochloride
Product
H-D-Leu-OtBu·HCl
GLB ID#
11842
CAS#
13081-32-8
MDL#
MFCD00083642
Formula
C10H21NO2·HCl
M.W.
223.7
Appearance
White to off-white powder
Purity
≥98%
Specific Rotation[a]20/D
+11o±2o (C=2 in DMF)
Optical Purity
Not Determined
Melting Point
~220oC
Solubility
0.3 gram in 2ml DMF clear solution
NMR Spectrum
Complies
Packaging
5g, 25g, 100g, 250g, 500g, 1kg, 10kg.... or on request 
Storage
Keep dry under 25o upon the receipt
Price
Use
For the research and development purpose only

16.7.14

H-Leu-OtBu·HCl CAS#2748-02-9 (GLB ID-11841)

L-Leucine-Tert-butyl Ester Hydrochloride
Product
H-Leu-OtBu·HCl
GLB ID#
11841
CAS#
2748-02-9
MDL#
MFCD00038906
Formula
C10H21NO2·HCl
M.W.
223.7
Appearance
White to off-white powder
Purity
≥98%
Specific Rotation[a]20/D
+11o±2o (C=2 in DMF)
Optical Purity
Not Determined
Melting Point
Maybe batch specific
Solubility
0.3 gram in 2ml DMF clear solution
NMR Spectrum
Complies
Packaging
5g, 25g, 100g, 250g, 500g, 1kg, 10kg.... or on request 
Storage
Keep dry under 25o upon the receipt
Price
Use
For the research and development purpose only