Structural formula:

Molecular formular: C₁₆H₁₅NO₃S
Molecular weight: 301.26
Description: Off-white to light cream powder
Identification(IR): Positive
Assay(by HPLC): 98% min.
Melting point: 195-207 ℃
Loss on drying(105 ℃ ): 0.5% max.
D(+) Acid: 0.5% max.
Specific optical rotation (0.5% w/v methanol solution): + 109 ∽ +119 °
Usage: Intermediate for Diltiazem
Package: 25kg seaworthy fibre drum
Capacity: 20MT/month
Remarks: We also can offer other grades according to customer's requirement.