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ChemicalBook >> CAS DataBase List >> Fluorescent Brightener KS-N

Fluorescent Brightener KS-N

Fluorescent Brightener KS-N price.
  • $12 - $2519
  • Product name: Fluorescent Brightener KS-N
  • CAS: 5242-49-9
  • MF: C29H20N2O2
  • MW: 428.48
  • EINECS:226-044-2
  • MDL Number:MFCD00328411
  • Synonyms:4-(Benzoxazol-2-yl)-4'-(5-methylbenzoxazol-2-yl)stilbene;2-[4-[2-[4-(Benzoxazol-2-yl)phenyl]vinyl]phenyl]-5-methylbenzoxazol;2-{4-{2-[4-(2-Benzoxazolyl)-phenyl]-vinyl}-phenyl}-5-methylbenzoxazole;4-BIS(5-METHYL-2-BENZIAZOLYL)ETHLENE,99.5+%;OPTICAL BRIGHTENER 368;FBA 368;Optical Brightener KSN;KSNFluorescent Brightener
38 prices
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  • A2B
  • aablocks
  • AK Scientific
  • Apolloscientific
  • Arctom
  • BLDpharm
  • Chemenu
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Package
  • 250mg
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  • ManufacturerA2B
  • Product numberAI51765
  • Product description2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole 95%
  • Packaging25g
  • Price$15
  • Updated2026-05-25
  • Buy
  • ManufacturerA2B
  • Product numberAI51765
  • Product description2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole 95%
  • Packaging100g
  • Price$30
  • Updated2026-05-25
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  • ManufacturerA2B
  • Product numberAI51765
  • Product description2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole 95%
  • Packaging500g
  • Price$93
  • Updated2026-05-25
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  • Manufactureraablocks
  • Product numberAA00I9AX
  • Product description2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole ≥95%
  • Packaging500g
  • Price$119
  • Updated2026-05-29
  • Buy
  • Manufactureraablocks
  • Product numberAA00I9AX
  • Product description2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole ≥95%
  • Packaging100g
  • Price$36
  • Updated2026-05-29
  • Buy
  • Manufactureraablocks
  • Product numberAA00I9AX
  • Product description2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole ≥95%
  • Packaging25g
  • Price$17
  • Updated2026-05-29
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ11665
  • Product description4-(2-Benzoxazolyl)-4'-(5-methyl-2-benzoxazolyl)stilbene 95%(HPLC)
  • Packaging5g
  • Price$29
  • Updated2026-06-04
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  • ManufacturerAK Scientific
  • Product numberV1592
  • Product descriptionFluorescent Brightener KSN 95%(HPLC)
  • Packaging5g
  • Price$29
  • Updated2026-06-04
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  • ManufacturerAK Scientific
  • Product numberV1592
  • Product descriptionFluorescentBrightenerKSN
  • Packaging100g
  • Price$260
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ11665
  • Product description4-(2-Benzoxazolyl)-4'-(5-methyl-2-benzoxazolyl)stilbene 95%(HPLC)
  • Packaging25g
  • Price$71
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberV1592
  • Product descriptionFluorescent Brightener KSN 95%(HPLC)
  • Packaging25g
  • Price$71
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ11665
  • Product description4-(2-Benzoxazolyl)-4'-(5-methyl-2-benzoxazolyl)stilbene 95%(HPLC)
  • Packaging100g
  • Price$214
  • Updated2026-06-04
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  • ManufacturerAK Scientific
  • Product numberV1592
  • Product descriptionFluorescent Brightener KSN 95%(HPLC)
  • Packaging100g
  • Price$214
  • Updated2026-06-04
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  • ManufacturerApolloscientific
  • Product numberOR52143
  • Product description4-(1,3-Benzoxazol-2-yl)-4'-(5-methyl-1,3-benzoxazol-2-yl)stilbene >95%
  • Packaging500g
  • Price$130
  • Updated2026-06-04
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  • ManufacturerApolloscientific
  • Product numberOR52143
  • Product description4-(1,3-Benzoxazol-2-yl)-4'-(5-methyl-1,3-benzoxazol-2-yl)stilbene >95%
  • Packaging2.5kg
  • Price$640
  • Updated2026-06-04
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  • ManufacturerApolloscientific
  • Product numberOR52143
  • Product description4-(1,3-Benzoxazol-2-yl)-4'-(5-methyl-1,3-benzoxazol-2-yl)stilbene >95%
  • Packaging10kg
  • Price$2519
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
A2B AI51765 2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole 95% 25g $15 2026-05-25 Buy
A2B AI51765 2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole 95% 100g $30 2026-05-25 Buy
A2B AI51765 2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole 95% 500g $93 2026-05-25 Buy
aablocks AA00I9AX 2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole ≥95% 500g $119 2026-05-29 Buy
aablocks AA00I9AX 2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole ≥95% 100g $36 2026-05-29 Buy
aablocks AA00I9AX 2-(4-(4-(Benzo[d]oxazol-2-yl)styryl)phenyl)-5-methylbenzo[d]oxazole ≥95% 25g $17 2026-05-29 Buy
AK Scientific J11665 4-(2-Benzoxazolyl)-4'-(5-methyl-2-benzoxazolyl)stilbene 95%(HPLC) 5g $29 2026-06-04 Buy
AK Scientific V1592 Fluorescent Brightener KSN 95%(HPLC) 5g $29 2026-06-04 Buy
AK Scientific V1592 FluorescentBrightenerKSN 100g $260 2021-12-16 Buy
AK Scientific J11665 4-(2-Benzoxazolyl)-4'-(5-methyl-2-benzoxazolyl)stilbene 95%(HPLC) 25g $71 2026-06-04 Buy
AK Scientific V1592 Fluorescent Brightener KSN 95%(HPLC) 25g $71 2026-06-04 Buy
AK Scientific J11665 4-(2-Benzoxazolyl)-4'-(5-methyl-2-benzoxazolyl)stilbene 95%(HPLC) 100g $214 2026-06-04 Buy
AK Scientific V1592 Fluorescent Brightener KSN 95%(HPLC) 100g $214 2026-06-04 Buy
Apolloscientific OR52143 4-(1,3-Benzoxazol-2-yl)-4'-(5-methyl-1,3-benzoxazol-2-yl)stilbene >95% 500g $130 2026-06-04 Buy
Apolloscientific OR52143 4-(1,3-Benzoxazol-2-yl)-4'-(5-methyl-1,3-benzoxazol-2-yl)stilbene >95% 2.5kg $640 2026-06-04 Buy
Apolloscientific OR52143 4-(1,3-Benzoxazol-2-yl)-4'-(5-methyl-1,3-benzoxazol-2-yl)stilbene >95% 10kg $2519 2026-06-04 Buy

Properties

Melting point :>273°C (dec.)
Boiling point :578.9±39.0 °C(Predicted)
Density :1.26
storage temp. :2-8°C
solubility :DMSO (Very Slightly, Heated)
form :Solid
pka :2.65±0.10(Predicted)
color :Yellow
Henry's Law Constant :7.5×108 mol/(m3Pa) at 25℃, Zhang et al. (2010)
InChI :InChI=1S/C29H20N2O2/c1-19-6-17-27-25(18-19)31-29(33-27)23-15-11-21(12-16-23)8-7-20-9-13-22(14-10-20)28-30-24-4-2-3-5-26(24)32-28/h2-18H,1H3
InChIKey :SOTPOQQKAUOHRO-BQYQJAHWSA-N
SMILES :O1C2=CC=C(C)C=C2N=C1C1=CC=C(C=CC2=CC=C(C3=NC4=CC=CC=C4O3)C=C2)C=C1
CAS DataBase Reference :5242-49-9(CAS DataBase Reference)
EPA Substance Registry System :Benzoxazole, 2-[4-[2-[4-(2-benzoxazolyl)phenyl]ethenyl]phenyl]-5-methyl- (5242-49-9)

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P312 Call a POISON CENTER or doctor/physician if you feel unwell.
P313 Get medical advice/attention.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P362 Take off contaminated clothing and wash before reuse.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

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