有机化学
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Amethyst
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Rieke Metals
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Daicel(大赛璐)
Maybridge
Aldrich
Sigma-Aldrich
纯度
全部
-
>90%
>95%
>97%
>97% (HPLC)
>98%
≥ 95.50%
≥94% (HPLC/T)
≥95.0%
≥95.0% (calc. based on dry substance, NT)
≥95.0% (GC)
≥95%
≥95% (NMR)
≥96.0%
≥96.0% (GC)
≥96%
≥97.0%
≥97.0% (CHN)
≥97.0% (GC)
≥97.0% (H-NMR)
≥97.0% (T)
≥97%
≥98.0%
≥98.0% (GC)
≥98.0% (HPLC)
≥98.0% (sum of enantiomers, GC)
≥98.5% (HPLC/T)
≥98.5% (T)
≥98%
≥99.0%
≥99.0% (GC)
≥99.99% trace metals basis
≥99%
0.2?M in toluene
0.25?M in THF
0.5?M in THF
100-200?mesh, extent of labeling: 0.85-1.2?mmol/g loading, 1?% cross-linked
15.2-16.8% BF3 basis
200-400?mesh, extent of labeling: ~2.0?mmol/g loading, 2?% cross-linked with div
200-400?mesh, extent of labeling: 1.5-2.0?mmol/g per 7% carbon loading
50?wt. % in H2O
70.0%(GC)
75.0%(GC)
80%
80%, technical grade
85%
90.0%(GC)
90.0%(LC)
90.0%(N)
90.0%(T)
90%
90+%
92.0%(GC)
92%
93.0%(LC)
94.0%(GC)
94%
95
95.0%(GC)
95.0%(GC&T)
95.0%(LC)
95.0%(LC&N)
95.0%(LC&T)
95.0%(N)
95.0%(T)
95%
95%%+
95%+
95+%
95=%
96.0%(GC)
96.0%(GC&T)
96.0%(N)
96%
96%%+
96+%
97.0%(GC)
97.0%(GC&N)
97.0%(GC&T)
97.0%(LC)
97.0%(LC&N)
97.0%(N)
97.0%(T)
97.5%
97%
97% (HPLC)
97%, mixture of isomers
97%%+
97+%
98 atom % D, contains hydroquinone as stabilizer
98.0%(GC)
98.0%(GC&N)
98.0%(GC&T)
98.0%(LC)
98.0%(LC&N)
98.0%(LC&T)
98.0%(N)
98.0%(N&LC)
98.0%(N&T)
98.0%(T)
98.0%(T&GC)
98.0%%+
98.5%
98%
98% (HPLC)
98%%+
99.0%
99.0%(GC)
99.0%(GC&T)
99.0%(T)
99.5%
99.5%(GC)
99.9%
99.98% trace metals basis
99%
99%, liquid crystal (nematic)
99%%+
ACS reagent, 98.5-102.0%
AldrichCPR
average Mn ~20,000
electronic grade, 99.999% trace metals basis
extent of labeling: ~2.6?mol cyanoethylation per mol cellulose (D.S.)
extent of labeling: 2.5-4.5?mmol/g BH3CN- loading
liquid
liquid crystal (nematic)
liquid crystal (nematic), 96%
liquid crystal (nematic), 98%
liquid crystal (nematic), 99%
Lonza quality, ≥96.0% (based on DM, GC, KF)
Lonza quality, ≥99.0% (calculated, GC, KF)
Lonza quality, ≥99.0% (GC, KF)
Lonza quality, ≥99.0% (GC)
macroporous, 20-50?mesh, extent of labeling: ~2.0?mmol/g loading
min. 97%
mixture of isomers, ≥97%
N/A
NMR reference standard, 0.23?wt. % in D2O (99.9 atom % D), water 0.05?wt. %
purum, ≥98.0% (HPLC)
purum, ≥98.5% (HPLC/T)
ReagentPlus?, 99%
size L
size L, CE compliant
size M
size M, CE compliant
size S
size S, CE compliant
size XL
size XL, CE compliant
size XS
size XXL
TECH
technical grade
technical grade, ≥90%
technical grade, 90%
technical grade, 95%
technical, ~70% (GC)
technical, ≥80%
technical, ≥90% (GC)
technical, ≥95% (AT)
technical, ≥95% (GC)
textured tips, size L
textured tips, size M
textured tips, size S
textured tips, size XL
textured tips, size XS
规格
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0.1g
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1000ea
1000g
100ea
100g
100mg
100ml
10g
10kg
10mg
10ml
10pak
12ml
150mg
1ea
1g
1kg
1l
1mg
1ml
1pak
1pr
1sample
2.5g
2.5kg
2.5l
200kg
200mg
200umol
20g
20pak
250ea
250g
250mg
250ml
25g
25kg
25mg
25ml
2g
2kg
300mg
4l
500ea
500g
500mg
500ml
50ea
50g
50kg
50mg
50ml
50pr
5g
5kg
5l
5mg
5ml
750mg
800ml
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