申请人:DAIICHI SANKYO COMPANY, LIMITED
公开号:US20150376156A1
公开(公告)日:2015-12-31
A compound represented by the following formula (I):
wherein R
1
represents a C
1
-C
19
alkyl, R
2
represents a C
1
-C
4
alkyl and Ac represents an acetyl, the compound represented by the formula (I) is optionally contained with up to 10 wt. % of a compound represented by the following formula (II):
having a chemical purity of 97 wt. % or higher, wherein in the case where the compound represented by the formula (II) is contained with the compound represented by formula (I), the chemical purity of the mixture of the compound represented by the formula (I) and the compound represented by the formula (II) is 97 wt. % or higher.
以下式子(I)所代表的化合物:其中R1代表C1-C19烷基,R2代表C1-C4烷基,Ac代表乙酰基。式(I)所代表的化合物可以与以下式子(II)所代表的化合物以最高10重量%的含量混合:该化合物的化学纯度为97重量%或更高。在化合物(II)与式(I)所代表的化合物混合的情况下,化合物(I)和化合物(II)的混合物的化学纯度为97重量%或更高。