(4ar,4bs,6as,6bs,9ar,10as,10br,12s)-6b-acetyl-4a,6a,8,8,12-pentamethyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2h-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one 22118-09-8 KST-1A2788 CAS 22118-09-8

Purity 97%+In StockPharmaceutical Standards
CAS No.22118-09-8
Molecular FormulaC2H2BrClO
Molecular Weight157.39 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(4ar,4bs,6as,6bs,9ar,10as,10br,12s)-6b-acetyl-4a,6a,8,8,12-pentamethyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2h-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one 22118-09-8 KST-1A2788 CAS 22118-09-8 chemical structure

Description

(4ar,4bs,6as,6bs,9ar,10as,10br,12s)-6b-acetyl-4a,6a,8,8,12-pentamethyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2h-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one 22118-09-8 KST-1A2788 (CAS 22118-09-8) is a high-purity analytical reference standard with the molecular formula C2H2BrClO and a molecular weight of 157.39 g/mol.

(4ar,4bs,6as,6bs,9ar,10as,10br,12s)-6b-acetyl-4a,6a,8,8,12-pentamethyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2h-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one 22118-09-8 KST-1A2788 (C2H2BrClO) contains a hydroxyl group, an ether linkage, chlorine/bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), (4ar,4bs,6as,6bs,9ar,10as,10br,12s)-6b-acetyl-4a,6a,8,8,12-pentamethyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2h-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one 22118-09-8 KST-1A2788 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

Molecular FormulaC2H2BrClO
Molecular Weight157.39 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1963
Halogen ContentCl/Br-containing

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