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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

2-Cyano-4'-methylbiphenyl | CAS 114772-53-1

An upstream biphenyl nitrile whose para methyl group is converted to a bromomethyl handle in a published pharmaceutical-intermediate process; substitution pattern and separation from Br-OTBN are central to purchasing the correct stage.

CAS114772-53-1
Molecular formulaC14H11N

Product overview

OTBN combines a biphenyl framework with an ortho nitrile and a methyl group on the other ring. The methyl group is the site converted to the bromomethyl derivative in sartan-intermediate chemistry. Positional identity and the methyl-stage impurity profile are the principal qualifications for this starting fragment.

Chemical identity

Chemical name
2-Cyano-4'-methylbiphenyl
CAS number
114772-53-1
Molecular formula
C14H11N

Application context

In documented sartan-intermediate chemistry, OTBN is converted at its methyl group into the bromomethyl biphenyl nitrile used for subsequent fragment coupling. The biphenyl nitrile framework is retained through that stage. Specify the methyl precursor, its positional identity and relevant aromatic impurities for the selected side-chain conversion.

Chemistry and synthetic role

The two rings are not equivalently substituted: the nitrile is ortho to the biaryl bond, while the methyl group is para on the opposite ring. Published chemistry changes the methyl stage to a bromomethyl stage while preserving the biphenyl nitrile framework.

Quality review

Resolve positional identity

Confirm the 2-cyano/4′-methyl arrangement by an appropriate structural comparison; elemental composition alone does not locate substituents.

Exclude a stage mix-up

Distinguish OTBN from Br-OTBN, CAS 114772-54-2, in labels, analytical references and order documents.

Evaluate related biphenyl compounds

Agree structural identification and chromatographic separation of positional isomers and process-related biphenyl compounds relevant to the selected preparation.

Preparing a specification

State the methyl-stage CAS and substitution pattern. Define an identity test and the required GC or other justified chromatographic criterion. Discuss related biphenyl components according to the proposed preparation and downstream conversion; specify actual numerical limits through qualification rather than copying an external catalogue grade.

Packaging and storage

Agree packaging, net weight and transport arrangements for the selected grade, quantity and destination. Confirm storage and handling conditions using the current SDS for the proposed material.

Documentation

Request the structural identity record, proposed chromatographic method and batch result. Confirm the availability of related-compound reporting suitable for the receiving conversion, together with the current SDS and the selected manufacturer’s specification.

Procurement questions

Are OTBN and Br-OTBN the same reagent?

No. OTBN has a methyl group; Br-OTBN has a bromomethyl group and a different CAS.

Can the formula establish the nitrile position?

No. Positional isomers can share the same formula, so structure-based identification is needed.

What is the next functional stage after OTBN?

Conversion of the para methyl group gives the bromomethyl derivative Br-OTBN, a fragment used for subsequent coupling while retaining the biphenyl nitrile framework.

Technical sources
  1. PubChem CID 145512 — structure propertiesPubChem / NCBI
  2. PubChem CID 145512 — CAS and synonymsPubChem / NCBI
  3. 2-Cyano-4′-methylbiphenyl, C1446TCI
  4. WO2003106406A1 — Process for producing 4′-bromomethyl-2-cyanobiphenylSumika Fine Chemicals / patent via Google Patents