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Chemical materials

Hydroxocobalamin Chloride

ULV035002 /
CAS No.：58288-50-9
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Sulphitocobalamin

ULV035003 /
CAS No.：15671-27-9
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Nitritocobalamin

ULV035004 /
CAS No.：20623-13-6
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Methylcobalamin Hydrate

ULV035005 /
CAS No.：288315-09-3
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Methylcobalamin-13C-d3

ULV035006 /
CAS No.：13422-55-4 (non-labelled)
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Methylcobalamin Impurity 1

ULV035007 /
CAS No.：17234-76-3
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Methylcobalamin Impurity 2

ULV035008 /
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Methylcobalamin Impurity 3

ULV035009 /
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Methylcobalamin Impurity 4

ULV035010 /
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Methylcobalamin Impurity 5

ULV035011 /
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Methylcobalamin Impurity 6

ULV035012 /
CAS No.：132-13-8
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Methylcobalamin Impurity 7

ULV035013 /
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Methylcobalamin Impurity 8

ULV035014 /
CAS No.：975-91-7
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Venlafaxine

ULV0351 /
CAS No.：93413-69-5
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Venlafaxine Impurity 16

ULV0352 /
CAS No.：2568340-30-5
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Venlafaxine EP Impurity E

ULV0353 /
CAS No.：93413-70-8
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N-Nitroso Venlafaxine Impurity 13

ULV0354 /
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N,O-Didesmethyl-N-Nitroso Venlafaxine

ULV0355 /
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Venlafaxine Impurity 17

ULV0356 /
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N-Nitroso Venlafaxine Impurity 17

ULV0357 /
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Venlafaxine Impurity 18

ULV0358 /
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N-Nitroso Venlafaxine Impurity 18

ULV0359 /
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N,O-Didesmethyl Venlafaxine

ULV036 /
CAS No.：135308-74-6
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Venlafaxine Impurity 19

ULV0360 /
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Calcium 4-Methyl-2-Oxovalerate

ULV036001 /
CAS No.：51828-95-6
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Calcium 3-Methyl-2-Oxovalerate

ULV036002 /
CAS No.：66872-75-1
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4-Chlorovaleroyl Chloride (4-Chloropentanoyl Chloride)

ULV036003 /
CAS No.：63480-12-6
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Valeric Acid Related Compound 1

ULV036005 /
CAS No.：30414-53-0
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Valeric Acid (Valproic Acid EP Impurity A)

ULV036006 /
CAS No.：109-52-4
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Valeric Acid Impurity 1

ULV036007 /
CAS No.：3274-28-0
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4,5-Dioxovaleric Acid

ULV036008 /
CAS No.：5976-90-9
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5-Chlorovaleric Anhydride

ULV036009 /
CAS No.：1802522-36-6
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Methyl Valerate

ULV036010 /
CAS No.：624-24-8
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BOC-DL-VAL-OH

ULV036011 /
CAS No.：54895-12-4
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N-Nitroso Venlafaxine Impurity 19

ULV0361 /
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Venlafaxine Impurity 20

ULV0362 /
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N-Nitroso Venlafaxine Impurity 20

ULV0363 /
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N-Nitroso Venlafaxine EP Impurity H

ULV0364 /
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N-Nitroso Venlafaxine EP Impurity D

ULV0365 /
CAS No.：2680662-11-5
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Venlafaxine Impurity 21

ULV0366 /
CAS No.：4091-50-3
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N-Nitroso Venlafaxine Impurity 21

ULV0367 /
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Venlafaxine Impurity 22

ULV0368 /
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N-Nitroso Venlafaxine Impurity 22

ULV0369 /
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O-Desmethyl Venlafaxine Glucuronide Lithium Salt (Mixture of Diastereomers)

ULV037 /
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Venlafaxine Impurity 23

ULV0370 /
CAS No.：727728-51-0
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Vitamin A EP Impurity A (Diels-Alder Dimers)

ULV037001 /
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Vitamin A EP Impurity B (Anhydro-Vitamin A) (Mixture of E/Z Isomers)

ULV037002 /
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Vitamin A EP Impurity C (retro-Vitamin A, all-trans-Retro Retinol)

ULV037003 /
CAS No.：16729-22-9
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13-Cis Vitamin A Palmitate

ULV037004 /
CAS No.：26771-20-0
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5,6-monoepoxy Vitamin A

ULV037005 /
CAS No.：512-39-0
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  • Taipei, New Taipei, Keelung / Yilan / Hualien
  • Taoyuan
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  • Yunlin/Chiayi/Tainan
  • Kaohsiung/Pingtung/Taitung

Taipei Branch

Address 5th Floor, No. 10, Lane 50, Section 3, Nangang Road, Nangang District, Taipei City
Telephone 02-2786-2331
Fax 02-2653-6959
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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