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ChemicalBook >> CAS DataBase List >> 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine

6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine

6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine price.
  • $6 - $6718.57
  • Product name: 6,7-Dihydro-5-methyl-5(H)-cyclopentapyrazine
  • CAS: 23747-48-0
  • MF: C8H10N2
  • MW: 134.18
  • EINECS:245-864-1
  • MDL Number:MFCD00040997
  • Synonyms:5-METHYL-6,7-DIHYDROC;5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE;6,7-DIHYDRO-5-METHYL-5H-CYCLOPENTAPYRAZINE;5H-5-METHYL-6,7-DIHYDROCYCLOPENTA[B]PYRAZINE;5H-5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE;5H-Cyclopentapyrazine, 6,7-dihydro-5-methyl-;5-methyl-(5H)-6,7-dihydrocyclo- pentapyrazine;5-Methyl-5H-cyclopenta[b]pyrazine
28 prices
Selected condition：
Brand
  • AK Scientific
  • Alfa Aesar
  • Alichem
  • Ambeed
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Chemenu
  • Chem-Impex
  • Sigma-Aldrich
  • SynQuest Laboratories
  • TCI Chemical
Package
  • 5mL
  • sample-k
  • 1g
  • 5g
  • 10g
  • 25g
  • 100g
  • 1kg
  • 2.5KG
  • ManufacturerAK Scientific
  • Product numberR563
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta(b)pyrazine
  • Packaging1g
  • Price$21
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberR563
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta(b)pyrazine
  • Packaging5g
  • Price$39
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ56415
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta(b)pyrazine
  • Packaging25g
  • Price$70
  • Updated2021-12-16
  • Buy
  • ManufacturerAlfa Aesar
  • Product numberB21671
  • Product description6,7-Dihydro-5-methylcyclopentapyrazine, 98%
  • Packaging1g
  • Price$33.5
  • Updated2021-12-16
  • Buy
  • ManufacturerAlfa Aesar
  • Product numberB21671
  • Product description6,7-Dihydro-5-methylcyclopentapyrazine, 98%
  • Packaging5g
  • Price$78.6
  • Updated2021-12-16
  • Buy
  • ManufacturerAlfa Aesar
  • Product numberB21671
  • Product description6,7-Dihydro-5-methylcyclopentapyrazine, 98%
  • Packaging25g
  • Price$288
  • Updated2021-12-16
  • Buy
  • ManufacturerAlichem
  • Product number23747480
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine
  • Packaging100g
  • Price$296.4
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA110503
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98%
  • Packaging1g
  • Price$6
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA110503
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98%
  • Packaging5g
  • Price$15
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA110503
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98%
  • Packaging10g
  • Price$25
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA110503
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98%
  • Packaging25g
  • Price$51
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA110503
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98%
  • Packaging100g
  • Price$158
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberFFG0003023
  • Product description5H-5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE 95.00%
  • Packaging25G
  • Price$1221.24
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberFFG0003023
  • Product description5H-5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE 95.00%
  • Packaging100G
  • Price$2726.26
  • Updated2021-12-16
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR937238
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 95%
  • Packaging10g
  • Price$174
  • Updated2021-12-16
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR937238
  • Product description5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 95%
  • Packaging25g
  • Price$363
  • Updated2021-12-16
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
AK Scientific R563 5-Methyl-6,7-dihydro-5H-cyclopenta(b)pyrazine 1g $21 2021-12-16 Buy
AK Scientific R563 5-Methyl-6,7-dihydro-5H-cyclopenta(b)pyrazine 5g $39 2021-12-16 Buy
AK Scientific J56415 5-Methyl-6,7-dihydro-5H-cyclopenta(b)pyrazine 25g $70 2021-12-16 Buy
Alfa Aesar B21671 6,7-Dihydro-5-methylcyclopentapyrazine, 98% 1g $33.5 2021-12-16 Buy
Alfa Aesar B21671 6,7-Dihydro-5-methylcyclopentapyrazine, 98% 5g $78.6 2021-12-16 Buy
Alfa Aesar B21671 6,7-Dihydro-5-methylcyclopentapyrazine, 98% 25g $288 2021-12-16 Buy
Alichem 23747480 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 100g $296.4 2021-12-16 Buy
Ambeed A110503 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98% 1g $6 2021-12-16 Buy
Ambeed A110503 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98% 5g $15 2021-12-16 Buy
Ambeed A110503 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98% 10g $25 2021-12-16 Buy
Ambeed A110503 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98% 25g $51 2021-12-16 Buy
Ambeed A110503 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 98% 100g $158 2021-12-16 Buy
American Custom Chemicals Corporation FFG0003023 5H-5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE 95.00% 25G $1221.24 2021-12-16 Buy
American Custom Chemicals Corporation FFG0003023 5H-5-METHYL-6,7-DIHYDROCYCLOPENTAPYRAZINE 95.00% 100G $2726.26 2021-12-16 Buy
Apolloscientific OR937238 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 95% 10g $174 2021-12-16 Buy
Apolloscientific OR937238 5-Methyl-6,7-dihydro-5H-cyclopenta[b]pyrazine 95% 25g $363 2021-12-16 Buy

Properties

Melting point :121-123 °C
Boiling point :96-99 °C20 mm Hg(lit.)
Density :1.055 g/mL at 25 °C(lit.)
FEMA :3306 | 5H-5-METHYL-6,7-DIHYDROCYCLOPENTA(B)PYRAZINE
refractive index :n20/D 1.527(lit.)
Flash point :174 °F
storage temp. :Inert atmosphere,Room Temperature
pka :1.85±0.40(Predicted)
form :clear liquid
color :Colorless to Light yellow to Light orange
Odor :nutty, roasted odor
Odor Type :earthy
Water Solubility :insoluble
JECFA Number :781
InChIKey :YZEFQPIMXZVPKP-UHFFFAOYSA-N
LogP :1.33
NIST Chemistry Reference :5H-5-methyl-6,7-dihydrocyclopentapyrazine(23747-48-0)
EPA Substance Registry System :5H-Cyclopentapyrazine, 6,7-dihydro-5-methyl- (23747-48-0)

Safety Information

Symbol(GHS): GHS hazard pictograms
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 GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning GHS hazard pictograms
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.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

5H-5-Methyl-6,7-dihydrocyclopenta(-b)pyrazine has an earthy, baked potato, peanut, roasted odor. It may be prepared from condensation of 2-hydroxy-3-methyl-2-cyclopentene-l-one and ethylene diamine; by condensing a cyclopentenolone with alkylenediamines, or alternatively, an aliphatic α-diketone with 1,2-diamino cyclopentane; the resulting product is dehydrogenated in the presence of palladium over activated charcoal or copper chromite.

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