(S)-(−)-2-Methyl-CBS-oxazaborolidine, 97%

Name: (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97%
Brand: Vaqora Chemicals
SKU: VQ-011271

About (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97%

Listed under CAS 112022-81-8, (S)-(−)-2-Methyl-CBS-oxazaborolidine is a chiral building block available from Vaqora Chemicals with a typical assay of 97%. Its molecular formula is C18H20BNO and its molecular weight is 277.2 g/mol. Its systematic (IUPAC) name is (3aS)-1-methyl-3,3-diphenyl-3a,4,5,6-tetrahydropyrrolo[1,2-c][1,3,2]oxazaborole. Alternative names: (S)-2-methyl-CBS-oxazaborolidine and (S)-CBS reagent.

The material typically appears as white to off-white powder or crystals. Store it at 2–8 °C, in a tightly closed container. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis and reduction reactions. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 5 g and 25 g, and every batch ships with a Certificate of Analysis (COA) and we export worldwide. SDS and detailed specification sheets can be requested with your quotation.

Typical applications

Organic synthesis
Reduction reactions

Industries

Specifications & identifiers

Chemical identifiers
Product name	(S)-(−)-2-Methyl-CBS-oxazaborolidine, 97%
Catalogue No.	VQ-011271
CAS Number	112022-81-8
IUPAC name	(3aS)-1-methyl-3,3-diphenyl-3a,4,5,6-tetrahydropyrrolo[1,2-c][1,3,2]oxazaborole
Molecular formula	C₁₈H₂₀BNO
Molecular weight	277.2 g/mol
Exact mass	277.1638
Purity / assay	97%
HSN code	29214290
InChIKey	VMKAFJQFKBASMU-KRWDZBQOSA-N
SMILES	B1(N2CCC[C@H]2C(O1)(C3=CC=CC=C3)C4=CC=CC=C4)C
PubChem CID	2734713

Physical properties
Physical form	Crystalline
Appearance	White to off-white powder or crystals
H-bond donors / acceptors	0 / 2
TPSA	12.5 Å²
Storage	2–8 °C
Synonyms	(S)-2-methyl-CBS-oxazaborolidine, (S)-CBS reagent, (S)-Me-CBS, (S)-Methyl-CBS, (3aS)-1-methyl-3,3-diphenyl-hexahydropyrrolo[1,2-c][1,3,2]oxazaborole, (3aS)-1-methyl-3,3-diphenyl-hexahydropyrrolo(1,2-c)(1,3,2)oxazaborole, (S)-(-)-2-Methyl-CBS-oxazaborolidine, (S)-1-Methyl-3,3-diphenylhexahydropyrrolo[1,2-c][1,3,2]oxazaborole, (S)-Tetrahydro-1-methyl-3,3-diphenyl-1H,3H-pyrrolo[1,2-c][1,3,2]oxazaborole, (S)-5,5-Diphenyl-2-methyl-3,4-propano-1,3,2-oxazaborolidine, S-(-)-2-Methyl-CBS-oxazaborolidine, (S)-2-Methyl-CBS-oxazaborolidine (1 M in Toluene)

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P317, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, 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

Other grades of CAS 112022-81-8

Extra Pure

(S)-(-)-Methyl-cbs-oxazaborolidine, 1 M in toluene, extra pure

CAS: 112022-81-8
Formula: C₁₈H₂₀BNO
MW: 277.2 g/mol

VQ-045970

Frequently asked questions

What is the CAS number of (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97%?

The CAS Registry Number of (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% is 112022-81-8. It is also known as (S)-2-methyl-CBS-oxazaborolidine, (S)-CBS reagent, (S)-Me-CBS.

What is the molecular formula and molecular weight of (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97%?

(S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% has the molecular formula C18H20BNO and a molecular weight of 277.2 g/mol. Its IUPAC name is (3aS)-1-methyl-3,3-diphenyl-3a,4,5,6-tetrahydropyrrolo[1,2-c][1,3,2]oxazaborole.

Which grade and pack sizes of (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% can I order?

We supply (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% in (97%) grade, in 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97%?

Yes. Every lot of (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% 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 (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% be shipped internationally?

Yes. (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% 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.

How should (S)-(−)-2-Methyl-CBS-oxazaborolidine, 97% be stored?

2–8 °C. Keep the container tightly closed and refer to the SDS for full handling guidance.