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Product Name L-Lysine 7-amido-4- methylcoumarin, acetate salt

CAT # L-160

CAS # 201853-23-8

Lot # 010380L160

Retest Date 01/2026

Storage Store at -20°C. Protect from light.

Test Specifications Results
Color white to off-white white
Form crystalline powder crystalline powder
Water Content (K. Fischer) ≤1.0% 0.4%
Melting Point 158-162ºC 161°C
Specific Optical Rotation [alpha]D ,(c = 1 in water, 20°C) 49.5 to 53.5 51.4
TLC ,(50 mg in 1.5 ml water; ethyl acetate/pyridine/acetic acid/water 6:5:1:3; UV 254 nm, ninhydrin) corresponds to reference material corresponds
Free AMC ,(50 mg in 1.5 ml water; butanol/acetic acid/water 6:3:1; UV 366 nm and ammonia vapor) ≤25 mg/kg <25 mg/kg
FT-IR Spectrum corresponds to reference spectrum corresponds
1H-NMR Spectrum corresponds to assigned structure corresponds
13C-NMR Spectrum corresponds to assigned structure corresponds
* GOLD BIOTECHNOLOGY, INC. provides this Certificate of Analysis in good faith. No representation is made as to the accuracy or comprehensiveness of the data and GOLD BIOTECHNOLOGY, INC. shall not be liable for any errors in the data. No representation is made as to the fitness of the data or of the materials for any particular use.User shall exercise its own raw material quality control, including analysis of the material, and shall independently determine the fitness of the data and the material for any use. No representation or warranty is made as to the effectiveness of the material or results obtained using the material, including damages or injury. GOLD BIOTECHNOLOGY, INC. liability is limited to the cost of the material. User assumes all responsibility for compliance with all laws and regulations implicated by use of this material.

† If provided, the Certificate of Analysis (COA) retest date corresponds to the recommended storage conditions provided on the COA. If no retest date is shown, the shelf-life for products is 2 years after purchase when stored according to COA recommendations. Retest dates are not rigid, and often only serve an informational purpose. COA retest dates are supplied by the manufacturer; however, GoldBio product labels may contain different storage recommendations to extend the life of the product beyond the manufacturer retest date or 2 years from purchase.
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1328 Ashby Rd.
St Louis, MO 63132
P: (314) 890-8778
F: (314) 890-0503
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Patrick Swan
QA/QC Department

Date of issue :

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