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CAS 556-68-3 Hexadecamethylcyclooctasiloxane molecular structure lightbox
CAS RN: 556-68-3

Hexadecamethylcyclooctasiloxane

Product Availability

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3 package records2 with current stock1 grade group
Batch No.PackageAvailabilityInquiry
Batchno.20260308 1g In stock Inquiry
Batchno.20251004 250mg In stock Inquiry
Batchno.20250924 50mg Out of stock Inquiry
  • Product code: SSC-163529
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Historical Factory Record

Historical Supply Reference

This product has historical factory records. Recorded pack sizes and purity can be used as a supply reference, while project-specific availability is confirmed by inquiry.

  • Pack sizes on record: 1ml
  • Available purity: ≥96%
  • Inventory rows with stock: 0
  • Bulk packaging: confirmed by inquiry
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Reference Pack Sizes

Reference pack sizes are shown below. Final availability, packaging and delivery schedule are confirmed by inquiry.

Recorded sizes, purity and stock details for CAS 556-68-3
Pack Size Recorded Purity Available Qty Ship From Inquiry
1ml ≥96% 0 Out of Stock Shanghai Inquiry

556-68-3 / 2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane

Standard CAS: 556-68-3 Multi CAS: No
Basic Information Computed Properties

Basic Information

CAS
556-68-3
Multi CAS
No
Molecular Formula
C16H48O8Si8
Molecular Weight
593.200000
Exact Mass
592.150331
InChI
InChI=1S/C16H48O8Si8/c1-25(2)17-26(3,4)19-28(7,8)21-30(11,12)23-32(15,16)24-31(13,14)22-29(9,10)20-27(5,6)18-25/h1-16H3
InChIKey
XKJMJYZFAWYREL-UHFFFAOYSA-N

Computed Properties

Structural Parameters

Heavy atom count
32
Fraction Csp3
1
H-bond acceptors
8
Molar refractivity
148.54
TPSA
73.84

LogP / Solubility

WLOGP
5.75
MLOGP
5.1
XLogP3
5.75
Consensus LogP
5.53
Log S (ESOL)
-7.14
Class (ESOL)
Insoluble
Log S (Ali)
-8.57
Class (Ali)
Insoluble
Log S (SILICOS-IT)
-8.29
Class (SILICOS-IT)
Insoluble

ADME

GI absorption
Low
BBB permeant
No
P-gp substrate
No
CYP1A2 inhibitor
No
CYP2C19 inhibitor
No
CYP2C9 inhibitor
Yes
CYP2D6 inhibitor
No
CYP3A4 inhibitor
Yes
Log Kp (skin permeation)
-2.26

Drug-likeness / Medicinal Chemistry

Lipinski
No
Ghose
No
Veber
Yes
Egan
Yes
Muegge
No
Bioavailability score
0.56
Brenk alerts
1
Leadlikeness
No
Synthetic Accessibility
4

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