Product Information |
Product name |
8-Bromo-3-methyl-xanthine / Linagliptin Intermediate |
CAS No. |
93703-24-3 |
Molecular Formula |
C6H5BrN4O2 |
Molecular Weight |
245.035 |
Quality Standard |
99% up by HPLC |
Appearance |
White to off-white powder |
COA of 8-Bromo-3-methyl-xanthine |
ITEMS |
SPECIFICATION |
RESULT |
Appearance |
White to off-white powder |
Conforms |
Identification by NMR/LC-MS HPLC |
The retention time of sample is concordant with reference standard |
Conforms |
Loss on drying |
≤ 1.0% |
0.4% |
Purity(HPLC) |
≥ 99.0% |
99.67% |
Conclusion |
The sample confirm to the enterprise standard |
Usage |
8-Bromo-3-methyl-xanthine is one of key Intermediate of Linagliptin.
Physical properties about 1H-Purine-2,6-dione,8-bromo-3,9-dihydro-3-methyl- are:
(1)ACD/LogP: -0.632;
(2)# of Rule of 5 Violations: 0;
(3)ACD/LogD (pH 5.5): -0.63;
(4)ACD/LogD (pH 7.4): -0.68;
(5)ACD/BCF (pH 5.5): 1.00;
(6)ACD/BCF (pH 7.4): 1.00;
(7)ACD/KOC (pH 5.5): 10.78;
(8) ACD/KOC (pH 7.4): 9.62;
(9)#H bond acceptors: 6;
(10)#H bond donors: 2;
(11)#Freely Rotating Bonds: 0;
(12)Polar Surface Area: 78.09 Å2;
(13)Index of Refraction: 1.662;
(14)Molar Refractivity: 45.914 cm3;
(15)Molar Volume: 124.076 cm3;
(16)Polarizability: 18.202×10-24cm3;
(17)Surface Tension: 75.226 dyne/cm;
(18)Density: 1.975 g/cm3.
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