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Semustine

Also known as: 1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea, Me-CCNU, N-(2-Chloroethyl)-N'-(4-methylcyclohexyl)-N-nitrosourea, ICIG 1110, 1-(2-Chloroethyl)-3-(trans-4-methylcyclohexyl)-1-nitrosourea, Semustin

Semustine (CAS 13909-09-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H18ClN3O2 and a molecular weight of 247.72200 g/mol. Key properties include a melting point of 64°C (rough estimate) and a density of 1.31 g/cm3. It is classified under GHS with signal word Danger and hazard statements H300, H311 — Toxic in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
13909-09-6
Jingsj CID
J-33475-8
Molecular Formula
C10H18ClN3O2
Molecular Weight
247.72200 g/mol
Category
Organic Compounds
Last updated
8/21/2026
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Physicochemical Properties

Melting Point64°C (rough estimate)
Density1.31 g/cm3
Exact Mass247.10900
PSA61.77000
LogP2.88780
Refractive Index1.51

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger
  • H300
  • H311 — Toxic in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H331 — Toxic if inhaled
  • H335 — May cause respiratory irritation
  • H350 — May cause cancer
  • H360 — May damage fertility or the unborn child

Activity & Biological Data

Additional Information[1]. Agarwal S, et al. Molecular modeling and spectroscopic studies of semustine binding with DNA and its comparison with lomustine-DNA adduct formation. J Biomol Struct Dyn. 2015;33(8):1653-68.

Customs & Trade Information

HS Code2924299090
Summary2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Semustine?

The CAS number of Semustine is 13909-09-6.

What are the molecular formula and molecular weight of Semustine?

Semustine has molecular formula C10H18ClN3O2 and molecular weight 247.72200 g/mol.

Is Semustine hazardous?

Semustine has GHS signal word Danger and hazard statements H300; H311 — Toxic in contact with skin; H315 — Causes skin irritation.

What are the upstream and downstream products of Semustine?

For Semustine, Upstream Products: 4-Methylcyclohexanamine (cis- and trans- mixture); Downstream Products: Ethanol, Ethylamine, 4-Methylcyclohexanamine (cis- and trans- mixture).

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Semustine (CAS 13909-09-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33475-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.