Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4-(dicyanomethylene)-2-methyl-6-(4-(dimethylamino)styryl)-4H-pyran
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
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Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 4-(dicyanomethylene)-2-methyl-6-(4-(dimethylamino)styryl)-4H-pyran
Price: ￥648.0/250mg ￥1288.0/1g
Purity: 95.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
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Contact: Ms Wang
Email: enquiry@dycnchem.com

Shanghai Amole Biotechnology Co., Ltd.
China
Product Name: 4-(dicyanomethylene)-2-methyl-6-(4-(dimethylamino)styryl)-4H-pyran
Price: ￥Inquiry/100mg ￥Inquiry/1g ￥Inquiry/250mg ￥Inquiry/5g
Purity: 95.0%
Stocking Period: Inquiry
Contact: Xiyao Wang
Email: 3623107365@qq.com

51325-91-8

51325-91-8 structure

51325-91-8 structure

Name: 4-(dicyanomethylene)-2-methyl-6-(4-(dimethylamino)styryl)-4H-pyran
Chemical Name: 4-(dicyanomethylene)-2-methyl-6-(4-(dimethylamino)styryl)-4H-pyran
CAS Number: 51325-91-8
Molecular Formula: C₁₉H₁₇N₃O
Molecular Weight: 303.358
Catalog: Pharmaceutical intermediate Heterocyclic compound Pyran compound
Create Date: 2019-01-01 11:28:07
Modify Date: 2025-08-20 20:41:59

Name	4-(dicyanomethylene)-2-methyl-6-(4-(dimethylamino)styryl)-4H-pyran
Synonyms	(2-(2-(4-(Dimethylamino)phenyl)ethenyl)-6-methyl-4H-pyran-4-ylidene)propanedinitrile 4-(dicyanomethylene)-2-methyl-6-[p-(dimethylamino)styryl]-4H-pyran [2-[2-[4-(Dimethylamino)phenyl]ethenyl]-6-methyl-4H-pyran-4-ylidene]propanedinitrile Malononitrile, (2-(p-(dimethylamino)styryl)-6-methyl-4H-pyran-4-ylidene)- 4-(DicyanoMethylene)-2-Methyl-6-(p-diMethylaminostyryl)-4H-Pyran,Laser Grade (2-(2-(4-(Dimethylamino)phenyl)vinyl)-6-methyl-4H-pyran-4-ylidene)malononitrile (2-(p-(Dimethylamino)styryl)-6-methyl-4H-pyran-4-ylidene)malononitrile EINECS 257-137-6 Propanedinitrile, 2-[2-[(E)-2-[4-(dimethylamino)phenyl]ethenyl]-6-methyl-4H-pyran-4-ylidene]- 4-Dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran MFCD00051341 2-[2-[2-[4-(dimethylamino)phenyl]ethenyl]-6-methylpyran-4-ylidene]propanedinitrile 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran 4-(Dicyanomethylene)-2-methyl-6-(4-(dimethylamino)styryl)-4H-pyran (2-{(E)-2-[4-(Dimethylamino)phenyl]vinyl}-6-methyl-4H-pyran-4-ylidene)malononitrile 4-(Dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran Propanedinitrile, (2-(2-(4-(dimethylamino)phenyl)ethenyl)-6-methyl-4H-pyran-4-ylidene)-

Density	1.2±0.1 g/cm3
Boiling Point	446.9±45.0 °C at 760 mmHg
Melting Point	215-220ºC (lit.)
Molecular Formula	C₁₉H₁₇N₃O
Molecular Weight	303.358
Flash Point	224.1±28.7 °C
Exact Mass	303.137177
PSA	60.05000
LogP	1.69
Vapour Pressure	0.0±1.1 mmHg at 25°C
Index of Refraction	1.689
Storage condition	Flammables area

CHEMICAL IDENTIFICATION

RTECS NUMBER :: OO3746100

CHEMICAL NAME :: Malononitrile, (2-(p-(dimethylamino)styryl)-6-methyl-4H-pyran-4-ylid ene)-

CAS REGISTRY NUMBER :: 51325-91-8

LAST UPDATED :: 199706

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C19-H17-N3-O

MOLECULAR WEIGHT :: 303.39

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

TYPE OF TEST :: Mutation in microorganisms

TEST SYSTEM :: Bacteria - Salmonella typhimurium

DOSE/DURATION :: 1 ug/plate

REFERENCE :: ENMUDM Environmental Mutagenesis. (New York, NY) V.1-9, 1979-87. For publisher information, see EMMUEG. Volume(issue)/page/year: 7,511,1985

Symbol	GHS02, GHS07
Signal Word	Danger
Hazard Statements	H228-H315-H319-H332-H335
Precautionary Statements	P210-P261-P305 + P351 + P338
Personal Protective Equipment	Eyeshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes	F: Flammable;Xn: Harmful;
Risk Phrases	R10;R11;R20/21/22;R36/37/38
Safety Phrases	S16-S26-S36/37-S7/9
RIDADR	UN 3175
WGK Germany	3
RTECS	OO3746100
Packaging Group	III
Hazard Class	4.1
HS Code	2932999099

28286-88-6 structure

28286-88-6

100-10-7 structure

100-10-7

~11%

51325-91-8 structure

51325-91-8

Literature: Bourson, Jean; Valeur, Bernard Journal of Physical Chemistry, 1989 , vol. 93, # 9 p. 3871 - 3876

Precursor 2
28286-88-6 100-10-7
DownStream 0

HS Code	2932999099
Summary	2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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