Boc-Asn-ONp CAS#4587-33-1 (GLB ID-30300)

(S)-4-nitrophenyl 4-amino-2-((tert-butoxycarbonyl)amino)-4-oxobutanoate

Product Synonyms	Boc-Asn-ONp; Boc-L-Asparagine 4-Nitrophenyl Ester
Appearance	White to Off-white Powder
GLB ID#	30300
CAS#	4587-33-1
MDL#	MFCD00056109
PubChem CID	439663
InChIKey	IAPXDJMULQXGDD-NSHDSACASA-N
Formula	C30H11N3O4
M.W.	353.3
Purity	≥98%
Specific Rotation[a]20/D	-38°±2° (C=1 in DMF)
Optical Purity	Not Measured
Melting Point	145-155°C
Solubility	0.3gram in 2ml DMF clear solution
Water Content (K.F.)	≤2.0%
Loss on drying	≤2.0%(70°C, 2h)
IR Spectrum	Complies
MS Spectrum	Complies
NMR Spectrum	Complies
Packaging	5g, 25g, 100g, 250g, 1kg, 5kg..... or on request
Storage	Keep cool & dry under <25°C upon the receipt of goods
Price	Request A Quote
Use	For the R&D purpose only, strictly not permitted for drug use.

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	Request A Quote
Use	For the research and development purpose only

H-Asn(Trt)-OH·H2O CAS#132388-58-0 (GLB ID-13046)

(S)-2-amino-4-oxo-4-(tritylamino)butanoic acid hydrate

Product	H-Asn(Trt)-OH·H2O
GLB ID#	13046
CAS#	132388-58-0
MDL#	MFCD00153422
Formula	C23H22N2O3·H2O
M.W.	392.5
Appearance	White to off-white powder
Purity	≥98%
Specific Rotation[a]20/D	-17o±3o (C=1 in DMF)
Optical Purity	≤0.5% L-enantiomer
Melting Point	205-220oC
Solubility	0.3 gram in 2ml DMF clear solution
MSS Spectrum	Complies
Packaging	1g, 5g, 25g, 100g, 250g, 500g, 1kg, 5kg.... or on request
Storage	Keep dry under 4o upon the receipt
Price	Request A Quote
Use	For the research and development purpose only

Fmoc-Asn(Trt)-OH CAS#132388-59-1 (GLB ID-35102)

N-Alpha-Fmoc-N-Gama-Trityl-L-Asparagine

Product	Fmoc-Asn(Trt)-OH
GLB ID#	35102
CAS#	132388-59-1
MDL#	MFCD00077049
Formula	C38H32N2O5
M.W.	596.7
Appearance	White to off-white powder
Purity	≥99%
Specific Rotation[a]20/D	-14.5o±2o(C=1 in MeOH)
Optical Purity	≤0.3% D-enantiomer
Melting Point	200-220oC
Solubility	0.3gram in 2ml DMF clear solution
NMR Spectrum	Complies
Packaging	250g, 500g, 1kg, 10kg, 100kg, 250kg.... or on request
Storage	Keep dry under 25o upon the receipt
Price	Request A Quote
Use	For the research and development purpose only