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Impurities and reference standards

Buserelin impurity E [EP impurity]

Also known as [1-(5-oxo-D-proline)]buserelin, Buserelin EP Impurity E (Free Base), Buserelin impurity e

CAS 1926163-20-3Formula C60H86N16O13Molar mass 1,239.45 g/mol
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Buserelin impurity E [EP impurity] chemical structure, C60H86N16O13, CAS 1926163-20-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1926163-20-3
Formula
C60H86N16O13
Molar mass
1,239.45 g/mol
HS code
293329
Category
Impurities and reference standards

What is Buserelin impurity E [EP impurity]?

Plain description, key identifiers and synonyms

Buserelin impurity E [EP impurity] is a chemical substance with the molecular formula C60H86N16O13 and a molar mass of 1,239.45 g/mol. Its CAS registry number is 1926163-20-3. The IUPAC name is (2R)-N-[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2S)-5-(diaminomethylideneamino)-1-[(2S)-2-(ethylcarbamoyl)pyrrolidin-1-yl]-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-[(2-methylpropan-2-yl)oxy]-1-oxopropan-2-yl]amino]-3-(4-hydroxyphenyl)-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]-5-oxopyrrolidine-2-carboxamide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R)-N-[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2S)-5-(diaminomethylideneamino)-1-[(2S)-2-(ethylcarbamoyl)pyrrolidin-1-yl]-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-[(2-methylpropan-2-yl)oxy]-1-oxopropan-2-yl]amino]-3-(4-hydroxyphenyl)-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]-5-oxopyrrolidine-2-carboxamide
CAS number
1926163-20-3
Molecular formula
C60H86N16O13
UNII
US8F9M33MW
InChIKey
CUWODFFVMXJOKD-UUVJJVFOSA-N
InChI
InChI=1S/C60H86N16O13/c1-7-64-57(87)48-15-11-23-76(48)58(88)41(14-10-22-65-59(61)62)69-51(81)42(24-33(2)3)70-56(86)47(31-89-60(4,5)6)75-52(82)43(25-34-16-18-37(78)19-17-34)71-55(85)46(30-77)74-53(83)44(26-35-28-66-39-13-9-8-12-38(35)39)72-54(84)45(27-36-29-63-32-67-36)73-50(80)40-20-21-49(79)68-40/h8-9,12-13,16-19,28-29,32-33,40-48,66,77-78H,7,10-11,14-15,20-27,30-31H2,1-6H3,(H,63,67)(H,64,87)(H,68,79)(H,69,81)(H,70,86)(H,71,85)(H,72,84)(H,73,80)(H,74,83)(H,75,82)(H4,61,62,65)/t40-,41+,42+,43+,44+,45+,46+,47-,48+/m1/s1
Canonical SMILES
CCNC(=O)C1CCCN1C(=O)C(CCCN=C(N)N)NC(=O)C(CC(C)C)NC(=O)C(COC(C)(C)C)NC(=O)C(Cc1ccc(O)cc1)NC(=O)C(CO)NC(=O)C(Cc1c[nH]c2ccccc12)NC(=O)C(Cc1cnc[nH]1)NC(=O)C1CCC(=O)N1
Isomeric SMILES
CCNC(=O)[C@@H]1CCCN1C(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](COC(C)(C)C)NC(=O)[C@H](CC2=CC=C(C=C2)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC3=CNC4=CC=CC=C43)NC(=O)[C@H](CC5=CN=CN5)NC(=O)[C@H]6CCC(=O)N6

Synonyms

  • [1-(5-oxo-D-proline)]buserelin
  • Buserelin EP Impurity E (Free Base)
  • Buserelin impurity e
  • 5-Oxo-D-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-O-(1,1-dimethylethyl)-D-seryl-L-leucyl-L-arginyl-N-ethyl-L-prolinamide
  • L-Prolinamide, 5-oxo-D-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-O-(1,1-dimethylethyl)-D-seryl-L-leucyl-L-arginyl-N-ethyl-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
1,239.45 g/molcalc.
Exact mass
1,238.656 Dacalc.
LogP (octanol/water)
-1.67calc.
Topological polar surface area
440.8 Ųcalc.
Hydrogen bond donors
15calc.
Hydrogen bond acceptors
15calc.
Rotatable bonds
32calc.
Heavy atoms
89calc.
Rings
6calc.
Aromatic rings
4calc.
Fraction sp3 carbons
0.53calc.
Formal charge
0calc.
Stereocentres
9calc.
Lipinski rule of five
Fails (3 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C(CNC(=O)CNC(=O)C(Cc1ccccc1)NC(=O)CNC(=O)C(Cc1c[nH]c2ccccc12)NC(=O)C(Cc1cnc[nH]1)NC(=O)C1CCC(=O)N1)NCC(=O)N1CCCC1

O=C(CNC(=O)CNC(=O)C(Cc1ccccc1)NC(=O)CNC(=O)C(Cc1c[nH]c2ccccc12)NC(=O)C(Cc1cnc[nH]1)NC(=O)C1CCC(=O)N1)NCC(=O)N1CCCC1

6 rings, 64 atoms.

81 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

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Buserelin impurity E [EP impurity] price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Buserelin impurity E [EP impurity] is traded under.

HS 2933.29Indicative HS code

Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…

World exports in 2024
$1.43B
−7.6% vs 2023, imports $1.47B
2019 to 2024
Top exporters
  1. China28.1%
  2. France * partner reported12.7%
  3. India * partner reported10.3%
Top importers
  1. United Kingdom13.0%
  2. United States7.9%
  3. China6.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Buserelin impurity E [EP impurity] is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Buserelin impurity E [EP impurity], based on the data on this page

What is Buserelin impurity E [EP impurity]?

Buserelin impurity E [EP impurity] is a chemical substance with the molecular formula C60H86N16O13 and a molar mass of 1,239.45 g/mol. Its CAS registry number is 1926163-20-3.

What is the CAS number of Buserelin impurity E [EP impurity]?

The CAS registry number of Buserelin impurity E [EP impurity] is 1926163-20-3.

What is the molecular formula and weight of Buserelin impurity E [EP impurity]?

The molecular formula of Buserelin impurity E [EP impurity] is C60H86N16O13 and its molar mass is 1,239.45 g/mol.

Is Buserelin impurity E [EP impurity] hazardous?

No GHS hazard classification for Buserelin impurity E [EP impurity] is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Buserelin impurity E [EP impurity]?

Buserelin impurity E [EP impurity] is usually classified under HS code 293329 (Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Buserelin impurity E [EP impurity]?

Post a free request on CompoundList and suppliers of Buserelin impurity E [EP impurity] will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Buserelin impurity E [EP impurity]?

Suppliers quote Buserelin impurity E [EP impurity] on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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