2-(Methylthio)-3-(o-tolyl)-3,5-dihydro-4H-pyrimido[5,4-b]indol-4-one CAS 888435-88-9

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-(Methylthio)-3-(o-tolyl)-3,5-dihydro-4H-pyrimido[5,4-b]indol-4-one.

2-(Methylthio)-3-(o-tolyl)-3,5-dihydro-4H-pyrimido[5,4-b]indol-4-one (CAS 888435-88-9) is a high-purity analytical reference standard with the molecular formula C18H15N3OS and a molecular weight of 321.40 g/mol.

Owing to a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 2-(Methylthio)-3-(o-tolyl)-3,5-dihydro-4H-pyrimido[5,4-b]indol-4-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 321.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 2-(Methylthio)-3-(o-tolyl)-3,5-dihydro-4H-pyrimido[5,4-b]indol-4-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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