Paclitaxel Impurity 83

SZ CAT No:	SZ-P032136
CAS No	NA
Mol.F.	C28H46O9Si
Mol.Wt.	554.7
Inv. Status	Custom Synthesis

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Chemical Name: (2a1R,3R,5S,5aS,7R,10S,12S,12aS)-2a,3,10,12-tetrahydroxy-5a,9,13,13-tetramethyl-6-oxo-5-((triethylsilyl)oxy)-2a,2a1,3,4,5,5a,6,7,10,11,12,12a-dodecahydro-2H-8,12-methanocyclodeca[cd]isobenzofuran-7-yl acetate

Synonym: 7-O-(Triethylsilyl-2-Debenzoyl-4-Desacetyl-[2,4]oxol-D-Seco-Baccatin III

Shipping Temperature: Ambient

HSN Code: 38229010

Country of Origin: India

Smiles: OC1([C@](C[C@@H]2O[Si](CC)(CC)CC)([H])O)[C@@]([C@@]2(C([C@@H]3OC(C)=O)=O)C)([H])[C@H](OC1)[C@@]4(C[C@H](O)C(C)=C3C4(C)C)O

Paclitaxel Impurity 83 is chemically (2a1R,3R,5S,5aS,7R,10S,12S,12aS)-2a,3,10,12-tetrahydroxy-5a,9,13,13-tetramethyl-6-oxo-5-((triethylsilyl)oxy)-2a,2a1,3,4,5,5a,6,7,10,11,12,12a-dodecahydro-2H-8,12-methanocyclodeca[cd]isobenzofuran-7-yl acetate. It is also known as 7-O-(Triethylsilyl-2-Debenzoyl-4-Desacetyl-[2,4]oxol-D-Seco-Baccatin III. Paclitaxel Impurity 83 is supplied with detailed characterization data compliant with regulatory guideline. Paclitaxel Impurity 83 can be used for the analytical method development, method validation (AMV), Quality Controlled (QC) application for Abbreviated New Drug Application (ANDA) or during commercial production of Paclitaxel.

The product can be used as reference standards and further traceability against pharmacopeial standards (USP or EP) can be provided based on feasibility. SynZeal products are for analytical purpose only and not for human use.

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Paclitaxel EP Impurity I

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SZ CAT No:	: SZ-P032029
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Paclitaxel Impurity 31

SZ CAT No:	: SZ-P032030
CAS No	: NA
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Paclitaxel Impurity 32

SZ CAT No:	: SZ-P032031
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SZ CAT No:	: SZ-P032033
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Paclitaxel Impurity 37

SZ CAT No:	: SZ-P032037
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SZ CAT No:	: SZ-P032022
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6α,3’-P-Dihydroxy Paclitaxel

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Paclitaxel EP Impurity H

SZ CAT No:	: SZ-P032132
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Paclitaxel EP Impurity D

SZ CAT No:	: SZ-P032048
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7-13-Bissidechain 10-Acetyl Paclitaxel

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SZ CAT No:	: SZ-P032050
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SZ CAT No:	: SZ-P032051
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Mol.Wt.	: 1143.6
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SZ CAT No:	: SZ-P032052
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SZ CAT No:	: SZ-P032053
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SZ CAT No:	: SZ-P032054
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SZ CAT No:	: SZ-P032064
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Mol.Wt.	: 403.4
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SZ CAT No:	: SZ-P032065
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SZ CAT No:	: SZ-P032066
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SZ CAT No:	: SZ-P032067
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SZ CAT No:	: SZ-P032068
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Mol.F.	: C55H57NO16
Mol.Wt.	: 988.0
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SZ CAT No:	: SZ-P032069
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Mol.F.	: C55H59NO17
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SZ CAT No:	: SZ-P032070
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Mol.F.	: C55H59NO17
Mol.Wt.	: 1006.1
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Paclitaxel Impurity 58

SZ CAT No:	: SZ-P032071
CAS No	: NA
Mol.F.	: C55H57NO16
Mol.Wt.	: 988.0
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Paclitaxel Impurity 59

SZ CAT No:	: SZ-P032072
CAS No	: NA
Mol.F.	: C55H57NO16
Mol.Wt.	: 988.0
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Paclitaxel Impurity 64

SZ CAT No:	: SZ-P032077
CAS No	: NA
Mol.F.	: C48H59NO16
Mol.Wt.	: 906.0
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Paclitaxel Impurity 65

SZ CAT No:	: SZ-P032078
CAS No	: NA
Mol.F.	: C48H59NO16
Mol.Wt.	: 906.0
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Paclitaxel Impurity 66

SZ CAT No:	: SZ-P032079
CAS No	: 143527-70-2
Mol.F.	: C17H23NO5
Mol.Wt.	: 321.4
Inv. Status	: In Stock

Paclitaxel Impurity 67

SZ CAT No:	: SZ-P032080
CAS No	: NA
Mol.F.	: C48H57NO14
Mol.Wt.	: 872.0
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 68

SZ CAT No:	: SZ-P032081
CAS No	: 143527-73-5
Mol.F.	: C51H60Cl3NO17
Mol.Wt.	: 1065.4
Inv. Status	: In Stock

Paclitaxel Impurity 69

SZ CAT No:	: SZ-P032082
CAS No	: 143527-71-3
Mol.F.	: C54H73NO15Si
Mol.Wt.	: 1004.3
Inv. Status	: In Stock

Paclitaxel Impurity 70

SZ CAT No:	: SZ-P032084
CAS No	: NA
Mol.F.	: C23H31NO4Si
Mol.Wt.	: 413.6
Inv. Status	: Custom Synthesis

Paclitaxel EP Impurity B

SZ CAT No:	: SZ-P032088
CAS No	: 71610-00-9
Mol.F.	: C45H53NO14
Mol.Wt.	: 831.9
Inv. Status	: In Stock

10-Deacetylbaccatin III (USP)

SZ CAT No:	: SZ-P032089
CAS No	: 32981-86-5
Mol.F.	: C29H36O10
Mol.Wt.	: 544.6
Inv. Status	: In Stock

Desbenzoyl Docetaxel

SZ CAT No:	: SZ-P032092
CAS No	: 160972-48-5
Mol.F.	: C36H49NO13
Mol.Wt.	: 703.8
Inv. Status	: In Stock

N-DesBoc Docetaxel

SZ CAT No:	: SZ-P032093
CAS No	: 133524-69-3
Mol.F.	: C38H45NO12
Mol.Wt.	: 707.8
Inv. Status	: In Stock

Paclitaxel Impurity 73

SZ CAT No:	: SZ-P032095
CAS No	: NA
Mol.F.	: C52H69Cl2NO16Si
Mol.Wt.	: 1063.1
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 3

SZ CAT No:	: SZ-P032096
CAS No	: NA
Mol.F.	: C45H55NO14
Mol.Wt.	: 833.9
Inv. Status	: In Stock

Desmethyl Ethyldihydrocephalomannine

SZ CAT No:	: SZ-P032097
CAS No	: 514801-83-3
Mol.F.	: C45H53NO14
Mol.Wt.	: 831.9
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 74

SZ CAT No:	: SZ-P032098
CAS No	: 382596-26-1
Mol.F.	: C23H29NO6
Mol.Wt.	: 415.5
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 75

SZ CAT No:	: SZ-P032099
CAS No	: NA
Mol.F.	: C17H23NO5
Mol.Wt.	: 321.4
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 76

SZ CAT No:	: SZ-P032100
CAS No	: 382596-28-3
Mol.F.	: C24H29NO6
Mol.Wt.	: 427.5
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 77

SZ CAT No:	: SZ-P032101
CAS No	: 382596-27-2
Mol.F.	: C26H33NO6
Mol.Wt.	: 455.5
Inv. Status	: Custom Synthesis

2-Desbenzoyl-2-Pentonyl Docetaxel

SZ CAT No:	: SZ-P032104
CAS No	: NA
Mol.F.	: C41H57NO14
Mol.Wt.	: 787.9
Inv. Status	: Custom Synthesis

Docetaxel 2’,7,10-Tris(triethylsilyl) Ether

SZ CAT No:	: SZ-P032105
CAS No	: 149107-86-8
Mol.F.	: C61H95NO14Si3
Mol.Wt.	: 1150.7
Inv. Status	: In Stock

Docetaxel 2’-Tert-Butylsimethylsilyl Ether

SZ CAT No:	: SZ-P032107
CAS No	: 342613-14-3
Mol.F.	: C49H67NO14Si
Mol.Wt.	: 922.1
Inv. Status	: In Stock

Docetaxal 2’-Tert-Butyldimethylsilyl Ether

SZ CAT No:	: SZ-P032108
CAS No	: 1144034-14-9
Mol.F.	: C51H69NO15Si
Mol.Wt.	: 964.2
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 78

SZ CAT No:	: SZ-P032111
CAS No	: 201856-57-7
Mol.F.	: C18H25NO5
Mol.Wt.	: 335.4
Inv. Status	: Custom Synthesis

Etanidazole

SZ CAT No:	: SZ-P032113
CAS No	: 22668-01-5
Mol.F.	: C7H10N4O4
Mol.Wt.	: 214.2
Inv. Status	: Custom Synthesis

Ethyl Docetaxel

SZ CAT No:	: SZ-P032114
CAS No	: 154044-47-0
Mol.F.	: C44H55NO14
Mol.Wt.	: 821.9
Inv. Status	: Custom Synthesis

N-Formyl 10-Oxo Docetaxel

SZ CAT No:	: SZ-P032116
CAS No	: NA
Mol.F.	: C39H43NO13
Mol.Wt.	: 733.8
Inv. Status	: Custom Synthesis

(3R,4S)-3-Hydroxy-4-Phenyl-2-Azetidinone

SZ CAT No:	: SZ-P032117
CAS No	: 132127-34-5
Mol.F.	: C9H9NO2
Mol.Wt.	: 163.2
Inv. Status	: Custom Synthesis

Paclitaxel EP Impurity A

SZ CAT No:	: SZ-P032118
CAS No	: 173101-54-7
Mol.F.	: C45H53NO14
Mol.Wt.	: 831.9
Inv. Status	: In Stock

Paclitaxel Impurity 79

SZ CAT No:	: SZ-P032119
CAS No	: 1714967-25-5
Mol.F.	: C58H72N2O18
Mol.Wt.	: 1085.2
Inv. Status	: Custom Synthesis

Paclitaxel EP Impurity F

SZ CAT No:	: SZ-P032120
CAS No	: 153083-53-5
Mol.F.	: C47H59NO14
Mol.Wt.	: 862.0
Inv. Status	: Custom Synthesis

Milataxel

SZ CAT No:	: SZ-P032121
CAS No	: 393101-41-2
Mol.F.	: C44H55NO16
Mol.Wt.	: 853.9
Inv. Status	: Custom Synthesis

7-Epi-10-Oxo-10-Deacetyl Baccatin III

SZ CAT No:	: SZ-P032122
CAS No	: 151636-94-1
Mol.F.	: C29H34O10
Mol.Wt.	: 542.6
Inv. Status	: Custom Synthesis

6-Oxo Docetaxel

SZ CAT No:	: SZ-P032123
CAS No	: 1412898-68-0
Mol.F.	: C43H51NO15
Mol.Wt.	: 821.9
Inv. Status	: Custom Synthesis

(αS,βR)-β-Phenyl Isoserine Hydrochloride

SZ CAT No:	: SZ-P032125
CAS No	: 521059-43-8
Mol.F.	: C9H11NO3 : HCl
Mol.Wt.	: 181.2 : 36.5
Inv. Status	: In Stock
Rel. CAS No	: 62075-28-9 (free base)

Taxol D

SZ CAT No:	: SZ-P032127
CAS No	: 153415-46-4
Mol.F.	: C44H53NO14
Mol.Wt.	: 819.9
Inv. Status	: In Stock

Paclitaxel EP Impurity P

SZ CAT No:	: SZ-P032128
CAS No	: 173101-56-9
Mol.F.	: C48H53NO14
Mol.Wt.	: 867.9
Inv. Status	: Limited Stock

7-Troc Baccatin-III

SZ CAT No:	: SZ-P032042
CAS No	: 133577-34-1
Mol.F.	: C34H39Cl3O13
Mol.Wt.	: 762.0
Inv. Status	: In Stock

Paclitaxel Impurity 81

SZ CAT No:	: SZ-P032133
CAS No	: 1033574-06-9
Mol.F.	: C58H58Cl3NO17
Mol.Wt.	: 1147.4
Inv. Status	: In Stock

7-O-(Triethylsilyl) Baccatin III

SZ CAT No:	: SZ-P032134
CAS No	: 115437-21-3
Mol.F.	: C37H52O11Si
Mol.Wt.	: 700.9
Inv. Status	: In Stock

Paclitaxel Impurity 82

SZ CAT No:	: SZ-P032135
CAS No	: NA
Mol.F.	: C28H46O9Si
Mol.Wt.	: 554.7
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 83

SZ CAT No:	: SZ-P032136
CAS No	: NA
Mol.F.	: C28H46O9Si
Mol.Wt.	: 554.7
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 84

SZ CAT No:	: SZ-P032137
CAS No	: NA
Mol.F.	: C52H75NO13Si2
Mol.Wt.	: 978.3
Inv. Status	: Custom Synthesis

7-O-(Trifluoroacetyl) Baccatin III

SZ CAT No:	: SZ-P032138
CAS No	: 158811-19-9
Mol.F.	: C32H37F3O13S
Mol.Wt.	: 718.7
Inv. Status	: In Stock

7-Xylosylpaclitaxel (USP)

SZ CAT No:	: SZ-P032144
CAS No	: 90332-66-4
Mol.F.	: C52H59NO18
Mol.Wt.	: 986.0
Inv. Status	: In Stock

Paclitaxel 13-Tes-Baccatin III

SZ CAT No:	: SZ-P032040
CAS No	: 208406-86-4
Mol.F.	: C37H52O11Si
Mol.Wt.	: 700.9
Inv. Status	: In Stock

2-Debenzoyl Paclitaxel 2-Pentenoate

SZ CAT No:	: SZ-P032041
CAS No	: NA
Mol.F.	: C45H53NO14
Mol.Wt.	: 831.9
Inv. Status	: In Stock

Paclitaxel Impurity 1

SZ CAT No:	: SZ-P032148
CAS No	: 206866-02-6
Mol.F.	: C44H53NO14
Mol.Wt.	: 819.9
Inv. Status	: In Stock

Paclitaxel Intermediate 2

SZ CAT No:	: SZ-P032149
CAS No	: 196404-55-4
Mol.F.	: C22H25NO6
Mol.Wt.	: 399.4
Inv. Status	: Out of Stock

7,13-Bissidechain 10-Deacetyl-Paclitaxel

SZ CAT No:	: SZ-P032150
CAS No	: NA
Mol.F.	: C61H62N2O16
Mol.Wt.	: 1079.2
Inv. Status	: Limited Stock

Paclitaxel EP Impurity M

SZ CAT No:	: SZ-P032151
CAS No	: 932042-85-8
Mol.F.	: C47H53NO15
Mol.Wt.	: 871.9
Inv. Status	: In Stock

Paclitaxel Impurity 2

SZ CAT No:	: SZ-P032152
CAS No	: 489459-83-8
Mol.F.	: C47H53NO15
Mol.Wt.	: 871.9
Inv. Status	: In Stock

Paclitaxel EP Impurity O

SZ CAT No:	: SZ-P032153
CAS No	: 219783-77-4
Mol.F.	: C49H53NO14
Mol.Wt.	: 880.0
Inv. Status	: Custom Synthesis

2’O-Benzoyl Paclitaxel

SZ CAT No:	: SZ-P032157
CAS No	: 158948-97-1
Mol.F.	: C54H55NO15
Mol.Wt.	: 958.0
Inv. Status	: In Stock

Paclitaxel Derivative C

SZ CAT No:	: SZ-P032158
CAS No	: 135393-42-9
Mol.F.	: C47H53NO15
Mol.Wt.	: 871.9
Inv. Status	: In Stock

2-Debenzoyl-2-Tigloyl 10-Deacetyl Baccatin III

SZ CAT No:	: SZ-P032159
CAS No	: 171926-87-7
Mol.F.	: C27H38O10
Mol.Wt.	: 522.6
Inv. Status	: Custom Synthesis

2-Debenzoyl-2-Pentenoate Baccatin-III

SZ CAT No:	: SZ-P032160
CAS No	: NA
Mol.F.	: C29H40O11
Mol.Wt.	: 564.6
Inv. Status	: Custom Synthesis

7-Troc-2-Debenzoyl-2-Pentenate Baccatin-III

SZ CAT No:	: SZ-P032161
CAS No	: NA
Mol.F.	: C32H41Cl3O13
Mol.Wt.	: 740.0
Inv. Status	: Custom Synthesis

7,13-Bis-O-(triethylsilyl) Baccatin III

SZ CAT No:	: SZ-P032162
CAS No	: 150541-99-4
Mol.F.	: C43H66O11Si2
Mol.Wt.	: 815.2
Inv. Status	: In Stock

7,10,13-Tris(triethylsilyl)-10-Deacetylbaccatin III

SZ CAT No:	: SZ-P032163
CAS No	: 194720-19-9
Mol.F.	: C47H78O10Si3
Mol.Wt.	: 887.4
Inv. Status	: In Stock

2′,7-Bis(triethylsilyl)taxol

SZ CAT No:	: SZ-P032154
CAS No	: 135365-62-7
Mol.F.	: C59H79NO14Si2
Mol.Wt.	: 1082.4
Inv. Status	: In Stock

19-Hydroxy-10-Deacetylbaccatin III

SZ CAT No:	: SZ-P032164
CAS No	: 154083-99-5
Mol.F.	: C29H36O11
Mol.Wt.	: 560.6
Inv. Status	: Custom Synthesis

13-Oxo-10-Deacetyl Baccatin III

SZ CAT No:	: SZ-P032165
CAS No	: 92950-42-0
Mol.F.	: C29H34O10
Mol.Wt.	: 542.6
Inv. Status	: In Stock

Paclitaxel EP Impurity R

SZ CAT No:	: SZ-P032155
CAS No	: 158948-96-0
Mol.F.	: C45H55NO14
Mol.Wt.	: 833.9
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 4

SZ CAT No:	: SZ-P032156
CAS No	: 159001-24-8
Mol.F.	: C45H55NO14
Mol.Wt.	: 833.9
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 5

SZ CAT No:	: SZ-P032166
CAS No	: NA
Mol.F.	: C52H63NO15
Mol.Wt.	: 942.1
Inv. Status	: In Stock

Paclitaxel Impurity 6

SZ CAT No:	: SZ-P032167
CAS No	: 57672-79-4
Mol.F.	: C37H46O14
Mol.Wt.	: 714.8
Inv. Status	: In Stock

Paclitaxel Impurity 7

SZ CAT No:	: SZ-P032168
CAS No	: NA
Mol.F.	: C35H42O13
Mol.Wt.	: 670.7
Inv. Status	: In Stock

Paclitaxel Impurity 49

SZ CAT No:	: SZ-P032062
CAS No	: 1262147-55-6
Mol.F.	: C24H21NO5
Mol.Wt.	: 403.4
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 8

SZ CAT No:	: SZ-P032169
CAS No	: 162459-94-1
Mol.F.	: C52H75NO13Si2
Mol.Wt.	: 978.3
Inv. Status	: In Stock

6α-Hydroxy Paclitaxel-d5

SZ CAT No:	: SZ-P032D17
CAS No	: 1315376-90-9
Mol.F.	: C47H46D5NO15
Mol.Wt.	: 874.9
Inv. Status	: Custom Synthesis

Taxine (Mixture of Taxine B and Iso-Taxine B)

SZ CAT No:	: SZ-P032170
CAS No	: NA
Mol.F.	: C33H45NO8
Mol.Wt.	: 583.7
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 9

SZ CAT No:	: SZ-P032171
CAS No	: 1432794-04-1
Mol.F.	: C9H9NO2
Mol.Wt.	: 163.2
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 10

SZ CAT No:	: SZ-P032172
CAS No	: 1432793-93-5
Mol.F.	: C9H9NO2
Mol.Wt.	: 163.2
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 11

SZ CAT No:	: SZ-P032173
CAS No	: NA
Mol.F.	: C22H27NO3Si
Mol.Wt.	: 381.5
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 12

SZ CAT No:	: SZ-P032174
CAS No	: 949022-65-5
Mol.F.	: C22H27NO3Si
Mol.Wt.	: 381.5
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 13

SZ CAT No:	: SZ-P032175
CAS No	: NA
Mol.F.	: C34H40Cl2O13
Mol.Wt.	: 727.6
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 14

SZ CAT No:	: SZ-P032176
CAS No	: 1236402-73-5
Mol.F.	: C50H53Cl2NO16
Mol.Wt.	: 994.9
Inv. Status	: Custom Synthesis

10-Deacetyl-14-Hydroxy-Baccatin III

SZ CAT No:	: SZ-P032177
CAS No	: 145533-34-2
Mol.F.	: C29H36O11
Mol.Wt.	: 560.6
Inv. Status	: Custom Synthesis

Paclitaxel Impurity 83

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