(R)-(+)-a-Methylbenzyl isocyanate

About (R)-(+)-a-Methylbenzyl isocyanate

(R)-(+)-a-Methylbenzyl isocyanate is an organic building block carrying the CAS registry number 33375-06-3. Its molecular formula is C9H9NO and its molecular weight is 147.17 g/mol. Its systematic (IUPAC) name is [(1R)-1-isocyanatoethyl]benzene. Common synonyms include (R)-(+)-1-Phenylethyl isocyanate and Benzene, [(1R)-1-isocyanatoethyl]-.

Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer (R)-(+)-a-Methylbenzyl isocyanate in 100 mg, 250 mg, 1 g and 5 g packs with a batch-specific COA, and ship to customers worldwide. SDS and detailed specification sheets can be requested with your quotation. Custom pack sizes, bulk quantities and specific analytical data can be arranged on request.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	(R)-(+)-a-Methylbenzyl isocyanate
Catalogue No.	VQ-032627
CAS Number	33375-06-3
IUPAC name	[(1R)-1-isocyanatoethyl]benzene
Molecular formula	C₉H₉NO
Molecular weight	147.17 g/mol
Exact mass	147.0684
HSN code	2933
InChIKey	JJSCUXAFAJEQGB-MRVPVSSYSA-N
SMILES	C[C@H](C1=CC=CC=C1)N=C=O
PubChem CID	7018262

Physical properties
Physical form	Other
LogP (XLogP3)	2.9
H-bond donors / acceptors	0 / 2
TPSA	29.4 Å²
Synonyms	(R)-(+)-1-Phenylethyl isocyanate, Benzene, [(1R)-1-isocyanatoethyl]-, Benzene, ((1R)-1-isocyanatoethyl)-, (+)-alpha-Methylbenzyl isocyanate, (R)-(+)-alpha-Methylbenzyl isocyanate, (r)-(+)-1-phenylethylisocyanate, (r)-phenylethylisocyanate, (r)-(1-isocyanatoethyl)benzene, (+)-.alpha.-Phenethyl isocyanate

Safety & hazard information (GHS)

Toxic

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H330Fatal if inhaled
H331Toxic if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation

Precautionary statements: P233, P260, P261, P264, P264 + P265, P271, P280, P284, P302 + P352, P304 + P340, P305 + P351 + P338, P316, P319, P320, P321, P332 + P317, P337 + P317, P342 + P316, P362 + P364, P403, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of (R)-(+)-a-Methylbenzyl isocyanate?

The CAS Registry Number of (R)-(+)-a-Methylbenzyl isocyanate is 33375-06-3. It is also known as (R)-(+)-1-Phenylethyl isocyanate, Benzene, [(1R)-1-isocyanatoethyl]-, Benzene, ((1R)-1-isocyanatoethyl)-.

What is the molecular formula and molecular weight of (R)-(+)-a-Methylbenzyl isocyanate?

(R)-(+)-a-Methylbenzyl isocyanate has the molecular formula C9H9NO and a molecular weight of 147.17 g/mol. Its IUPAC name is [(1R)-1-isocyanatoethyl]benzene.

Which grade and pack sizes of (R)-(+)-a-Methylbenzyl isocyanate can I order?

We supply (R)-(+)-a-Methylbenzyl isocyanate, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with (R)-(+)-a-Methylbenzyl isocyanate?

Yes. Every lot of (R)-(+)-a-Methylbenzyl isocyanate is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can (R)-(+)-a-Methylbenzyl isocyanate be shipped internationally?

Yes. (R)-(+)-a-Methylbenzyl isocyanate is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.