Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4,4'-((4H-1,2,4-Triazol-4-yl)methylene)dibenzonitrile
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

ShangHai DC Chemicals Co.,Ltd
China
Product Name: Letrozole related compound B
Price: ￥Inquiry/1g
Purity: 98.9%
Stocking Period: 1 Day
Contact: Tony Lai
Email: order@dcchemicals.com

DC Chemicals Limited
China
Product Name: Letrozole related compound B
Price: $Inquiry/100mg $Inquiry/250mg $Inquiry/500mg
Purity: 98.0%
Stocking Period: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

112809-52-6

112809-52-6 structure

112809-52-6 structure

Name: Letrozole related compound B
Chemical Name: 4-[(4-cyanophenyl)-(1,2,4-triazol-4-yl)methyl]benzonitrile
CAS Number: 112809-52-6
Molecular Formula: C₁₇H₁₁N₅
Molecular Weight: 285.30300
Create Date: 2018-12-16 19:01:52
Modify Date: 2025-09-11 12:27:58
Letrozole related compound B is an aromatase inhibitor impurity.

Name	4-[(4-cyanophenyl)-(1,2,4-triazol-4-yl)methyl]benzonitrile
Synonyms	letrozole regioisomer Iso Letrozole UNII-7VSW8QP34K Letrozole Impurity 1

Density	1.21g/cm3
Boiling Point	563.5ºC at 760mmHg
Molecular Formula	C₁₇H₁₁N₅
Molecular Weight	285.30300
Flash Point	294.6ºC
Exact Mass	285.10100
PSA	78.29000
LogP	2.65916
Vapour Pressure	1.01E-12mmHg at 25°C
Index of Refraction	1.665

RIDADR	NONH for all modes of transport
HS Code	2933990090

288-88-0 structure

288-88-0

69545-39-7 structure

69545-39-7

~3%

112809-52-6 structure

112809-52-6

112809-51-5 structure

112809-51-5

Literature: US2007/112202 A1, ; Page/Page column 7 ;

112809-27-5 structure

112809-27-5

1194-02-1 structure

1194-02-1

112809-25-3 structure

112809-25-3

~%

112809-52-6 structure

112809-52-6

Detail

Literature: WO2007/54964 A2, ; Page/Page column 5; 11 ;

Precursor 5
288-88-0 69545-39-7 112809-27-5 1194-02-1
112809-25-3
DownStream 0

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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