tert-butyl (R)-(1-(7-(but-2-yn-1-yl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamate

叔-丁基 N-[(3R)-1-(7-丁-2-炔基-3-甲基-2,6-二羰基嘌呤-8-基)哌啶-3-基]氨基甲酸酯

Also known as: Linagliptin Impurity 21, Linagliptin Impurity 4, 3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-(tert-butoxycarbonylamino)piperidin-1-yl]xanthine, 3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-(tert-butyloxycarbonylamino)piperidin-1-yl]xanthine, 3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-(tert-butyloxycarbonylamino)-piperidin-1-yl]-2,6-dioxo-2,3,6,7-tetrahydro-1H-purine, Carbamic acid, [(3R)-1-[7-(2-butynyl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1H-purin-8-yl]-3-piperidinyl]-, 1,1-dimethylethyl ester, tert-butyl (R)-(1-(7-(but-2-yn-1-yl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamate

tert-butyl (R)-(1-(7-(but-2-yn-1-yl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamate (CAS 666816-91-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C20H28N6O4 and a molecular weight of 416.47400 g/mol. It is also known as Linagliptin Impurity 21, Linagliptin Impurity 4 and 3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-(tert-butoxycarbonylamino)piperidin-1-yl]xanthine. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

666816-91-7

Jingsj CID

J-1368053-6

Molecular Formula

C₂₀H₂₈N₆O₄

Chinese Name

叔-丁基 N-[(3R)-1-(7-丁-2-炔基-3-甲基-2,6-二羰基嘌呤-8-基)哌啶-3-基]氨基甲酸酯

Molecular Weight

416.47400 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026