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Preparation costs for the reference extractive and single reference standards.
| Specific items | Amount (mg) | Expenses (RMB) | Cost price (RMB/mg) | |
|---|---|---|---|---|
| Single reference standards a | Cryptotanshinone | 20 | 147 | 7.35 |
| Tanshinone I | 20 | 179 | 8.95 | |
| Tanshinone IIA | 20 | 173 | 8.65 | |
| Reference extractive of S. miltiorrhiza Bunge | 150 | 207.58 | 1.38 | |
a The price of the single reference standards is based on the National Institute for Food and Drug Control (NIFDC, Beijing, China) cost.
