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Product name: |
Ergoloid Mesylates |
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Empirical formula: |
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Molecular weight: |
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CAS: |
[8067-24-1] |
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Description: |
White or almost white, microcrystalline or amorphous, practically odorless powder. |
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Identity |
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IR: |
Complies |
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TLC: |
Complies |
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Specific optical rotation in dried substance: |
11.0 to 15.0° |
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Value of pH: |
4.2 – 5.2 |
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Water: |
NMT 5.0% |
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Related substances |
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Ergotamine: |
Absent |
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Non-hydrogenated alkaloids: |
Complies |
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Content |
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Dihydroergocristine mesylate: |
30.3 - 36.3% rel. |
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Dihydroergocriptine mesylate: |
30.3 – 36.3% rel. |
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Dihydroergocornine mesylate: |
30.3 – 36.3% rel. |
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The ratio of alpha to beta isomers |
1.5 – 2.5 : 1% rel. |
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Assay |
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In anhydrous substance |
97.0 – 103.0% |
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Residual solvents |
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Ethyl acetate: |
NMT 5,000 ppm |
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Ethanol: |
NMT 5,000 ppm |
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Diethyl ether: |
NMT 5,000 ppm |
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Methanol: |
NMT 3,000 ppm |
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Organic volatile impurities |
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Dichloromethane: |
NMT 600 ppm |
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1,4-dioxane: |
NMT 380 ppm |
