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CAS 721431-18-1 Biotin-PEG4-propionic Acid molecular structure lightbox
CAS RN: 721431-18-1

Biotin-PEG4-propionic Acid

Product Availability

Choose a grade to view its available package options.

11 package records11 with current stock3 grade groups
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20250911 250mg In stock Inquiry
Batchno.20260430 50mg In stock Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20250617 100mg In stock Shanghai, Shenzhen, Tianjin Inquiry
Batchno.20250211 10g In stock Shanghai Inquiry
Batchno.20260301 1g In stock Shanghai, Shenzhen, Tianjin Inquiry
Batchno.20250218 250mg In stock Shanghai, Shenzhen, Tianjin, Wuhan, Chengdu Inquiry
Batchno.20251228 25g In stock Shanghai Inquiry
Batchno.20250722 25mg In stock Shanghai, Tianjin Inquiry
Batchno.20260215 50mg In stock Shanghai, Chengdu Inquiry
Batchno.20250112 5g In stock Shanghai, Shenzhen Inquiry
Batch No.PackageAvailabilityWarehouseLead TimeInquiry
Batchno.20260623 50mg / 100mg / 250mg / 1g Confirm by inquiry Shanghai 8-10 business days Inquiry
  • Product code: SSC-181693
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Verified Factory Data

Supply Overview & Packaging Options

Packaging options, recorded purity, stock quantity and ship-from location below are generated from the current factory data table for this CAS.

  • Pack sizes on record: 0.1g, 0.25g, 1g, 5g, 10g
  • Available purity: >95%
  • Inventory rows with stock: 3
  • Bulk packaging: confirmed by inquiry
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Available Pack Sizes & Stock

Specific stock quantities are shown below. Price is not displayed online and is confirmed by inquiry.

Recorded sizes, purity and stock details for CAS 721431-18-1
Pack Size Recorded Purity Available Qty Ship From Inquiry
0.1g >95% 1 In Stock Hong Kong Inquiry
0.25g >95% 1 In Stock Beijing Inquiry
1g >95% 1 In Stock Beijing Inquiry
5g >95% 0 Out of Stock Hong Kong Inquiry
10g >95% 0 Out of Stock Shenzhen Inquiry

721431-18-1 / 3-[2-[2-[2-[2-[5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid

Standard CAS: 721431-18-1 Multi CAS: Yes
Basic Information Computed Properties

Basic Information

CAS
721431-18-1
Multi CAS
Yes
Molecular Formula
C21H37N3O8S
Molecular Weight
491.600000
Exact Mass
491.230136
InChI
InChI=1S/C21H37N3O8S/c25-18(4-2-1-3-17-20-16(15-33-17)23-21(28)24-20)22-6-8-30-10-12-32-14-13-31-11-9-29-7-5-19(26)27/h16-17,20H,1-15H2,(H,22,25)(H,26,27)(H2,23,24,28)/t16-,17-,20-/m0/s1
InChIKey
GYOXFFWLRKVJJX-ZWOKBUDYSA-N

Computed Properties

Structural Parameters

Heavy atom count
33
Fraction Csp3
0.86
Rotatable bonds
20
H-bond acceptors
8
H-bond donors
4
Molar refractivity
122.5
TPSA
144.45

LogP / Solubility

WLOGP
0.37
MLOGP
0.36
XLogP3
-1
Consensus LogP
-0.09
Log S (ESOL)
-1.8
Class (ESOL)
Soluble
Log S (Ali)
-3.86
Class (Ali)
Poorly soluble
Log S (SILICOS-IT)
-5.56
Class (SILICOS-IT)
Slightly soluble

ADME

GI absorption
Low
BBB permeant
No
P-gp substrate
Yes
CYP1A2 inhibitor
No
CYP2C19 inhibitor
No
CYP2C9 inhibitor
No
CYP2D6 inhibitor
No
CYP3A4 inhibitor
No
Log Kp (skin permeation)
-5.46

Drug-likeness / Medicinal Chemistry

Lipinski
Yes
Ghose
No
Veber
No
Egan
No
Muegge
No
Bioavailability score
0.55
Brenk alerts
1
Leadlikeness
No
Synthetic Accessibility
4

Applications of CAS 721431-18-1

This compound is commonly used in pharmaceutical research and drug discovery, life science and biochemical research, biochemistry and reagent applications, laboratory reagent and synthesis applications. Starshine Chemical supplies CAS 721431-18-1 for R&D and pilot-scale use, with flexible pack sizes and purity grades available.

Physical & Chemical Properties

IUPAC Name3-[2-[2-[2-[2-[5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid

Storage & Handling

Storage: Store under inert gas. Avoid: Light Sensitive,Hygroscopic,Heat Sensitive. For detailed hazard, storage and transport information, request the SDS (Safety Data Sheet) with your inquiry.

Quotation & Packaging

Prices are confirmed by inquiry. Request a quote for current pricing, minimum order quantity (MOQ) and lead time. The pack sizes listed on this page are reference options; custom pack sizes and bulk quantities are available on request.

Quality & Compliance

Specifications and purity shown on this page are based on batch records. A Certificate of Analysis (COA) is available on request. For research and further manufacturing use only — not for direct human or therapeutic use.

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