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Chemical materials

Rilpivirine Nitrile Impurity ((2E)-3-(4-Amino-3, 5-Dimethylphenyl)prop-2-Enenitrile HCl)

ULR344 /
CAS No.：N/A
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Rilpivirine Keto Impurity (4-[(4-Oxo-1, 4-Dihydropyrimidin-2-yl)amino]-Benzonitrile)

ULR345 /
CAS No.：N/A
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Rilpivirine (Z-Isomer) HCl

ULR346 /
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Rilpivirine N-Oxide

ULR347 /
CAS No.：N/A
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Rilpivirine Amide

ULR348 /
CAS No.：500288-66-4
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Rilpivirine Impurity 5 (Mixture of Z and E Isomers)

ULR349 /
CAS No.：2280857-80-7
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Rifaximin-d6

ULR351 /
CAS No.：1262992-43-7
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Rifaximin EP Impurity G

ULR3510 /
CAS No.：80621-76-7
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Rifaximin EP Impurity B (Rifamycin B)

ULR3511 /
CAS No.：13929-35-6
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Rifaximin EP Impurity C (Rifamycin SV)

ULR3512 /
CAS No.：6998-60-3
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Rifaximin EP Impurity C Sodium Salt (Rifamycin SV Sodium Salt)

ULR3513 /
CAS No.：14897-39-3
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Rifaximin EP Impurity F (Rifamycin O)

ULR3514 /
CAS No.：14487-05-9
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Rifaximin EP Impurity E (Rifamycin S)

ULR3515 /
CAS No.：13553-79-2
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Rifaximin EP Impurity A

ULR3516 /
CAS No.：695-34-1
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Rifaximin Impurity 3

ULR3517 /
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Rifaximin

ULR352 /
CAS No.：80621-81-4
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Rifaximin EP Impurity D

ULR353 /
CAS No.：N/A
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Rifaximin Impurity H

ULR354 /
CAS No.：1210022-90-4
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25-Desacetyl Rifaximin

ULR355 /
CAS No.：80621-88-1
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25-Desacetyl Rifaximin-d6

ULR356 /
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Rifaximin Impurity 1

ULR357 /
CAS No.：1351775-04-6
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Rifaximin Impurity 2

ULR358 /
CAS No.：1351775-03-5
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Rifaximin Imine-N-Oxide

ULR359 /
CAS No.：51963-55-4
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Ritalinic Acid Lactam

ULR362 /
CAS No.：54593-31-6
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Ritalinic Acid Impurity 1 (Mixture of Diastereomers)

ULR365 /
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ULR366

ULR366 /
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ULR367

ULR367 /
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ULR368

ULR368 /
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ULR369

ULR369 /
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Roflumilast

ULR371 /
CAS No.：162401-32-3
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Roflumilast-d4

ULR3710 /
CAS No.：1398065-69-4
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Roflumilast Dimer

ULR3711 /
CAS No.：1352122-37-2
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5-Dechloro Roflumilast

ULR3712 /
CAS No.：1391053-75-0
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Roflumilast-d5 N-oxide

ULR3713 /
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Roflumilast-d5

ULR3714 /
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Roflumilast Impurity 6

ULR3715 /
CAS No.：N/A
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Roflumilast Impurity 7

ULR3716 /
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Roflumilast Impurity 8

ULR3717 /
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Roflumilast Impurity 9

ULR3718 /
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Roflumilast Impurity 10

ULR3719 /
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Roflumilast-d3

ULR372 /
CAS No.：1189992-00-4
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Roflumilast Impurity 11

ULR3720 /
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Roflumilast Impurity 12

ULR3721 /
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Roflumilast Impurity 13

ULR3722 /
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Roflumilast Impurity 14

ULR3723 /
CAS No.：N/A
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Roflumilast Impurity 15

ULR3724 /
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Roflumilast Impurity 16

ULR3725 /
CAS No.：228809-78-7
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Roflumilast Impurity 17

ULR3726 /
CAS No.：91872-02-5
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Roflumilast Impurity 18

ULR3727 /
CAS No.：162401-62-9
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Roflumilast Impurity 19

ULR3728 /
CAS No.：1882067-44-8
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Taipei Branch

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Telephone 02-2786-2331
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Mail taipei@echochemical.com

Taoyuan Branch

Address 2nd Floor, No. 62, Fuxing Street, Pingzhen District, Taoyuan City
Telephone 03-494-6939
Fax 03-493-0687
Mail chungli@echochemical.com

Head Office / Zhumen Branch

Address No. 16, Gongye Road, Toufen City, Miaoli County
Telephone 037-621-088
Fax 037-615-096
Mail miaoli@echochemical.com

Taichung Branch

Address 15F-2, No. 218, Section 1, Wenxin Road, Nantun District, Taichung City
Telephone 04-2472-8859
Fax 04-2472-8825
Mail taichung@echochemical.com

Tainan Branch

Address No. 33, Lane 63, Yanzhou 1st Street, Yongkang District, Tainan City
Telephone 06-243-6589
Fax 06-253-8208
Mail tainan@echochemical.com

Kaohsiung Branch

Address No. 479, Fengding Road, Fengshan District, Kaohsiung City
Telephone 07-753-9988
Fax 07-753-1958
Mail kaohsiung@echochemical.com
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