190791-29-8 Usage
Uses
disintegrant, enteric coating, sustained release formulations
Biological Activity
lasofoxifene (tartrate) is a third-generation, nonsteroidal selective estrogen receptor modulator (serm).estrogen receptors are activated by the hormone estrogen (17β-estradiol). serms are characterized by having estrogen agonist action in some tissues while acting as estrogen antagonists in others [1][2].lasofoxifene, also known as cp 336,156, is a third-generation, nonsteroidal selective estrogen receptor modulator. lasofoxifene bound with high affinity to the human estrogen receptor-α with ic50 value of 1.5 nm [1]. lasofoxifene is also a cb2 inverse agonist [4].in aged female rats, lasofoxifene decreased total serum cholesterol and fat body mass, and no uterine hypertrophy was observed. in 5-month-old ovariectomized (ovx) sprague-dawley female rats, lasofoxifene completely prevented ovx-induced increases in body weight gain, total serum cholesterol, and serum osteocalcin. cp-336,156 completely prevented ovx-induced bone loss and inhibited the increased bone turnover associated with estrogen deficiency in lumbar vertebrae, proximal tibiae, and distal femora [1].in postmenopausal women with osteoporosis, lasofoxifene reduced risks of nonvertebral and vertebral fractures, er-positive breast cancer, coronary heart disease, and stroke but an increased risk of venous thromboembolic events [2][3].
Biochem/physiol Actions
Lasofoxifene is a third-generation selective estrogen receptor modulator (SERM).
references
[1]. ke hz, paralkar vm, grasser wa, et al. effects of cp-336,156, a new, nonsteroidal estrogen agonist/antagonist, on bone, serum cholesterol, uterus and body composition in rat models. endocrinology. 1998 apr;139(4):2068-76.[2]. cummings sr, ensrud k, delmas pd, et al. lasofoxifene in postmenopausal women with osteoporosis. n engl j med. 2010 feb 25;362(8):686-96.[3]. gennari l, merlotti d, nuti r. selective estrogen receptor modulator (serm) for the treatment of osteoporosis in postmenopausal women: focus on lasofoxifene. clin interv aging. 2010 feb 2;5:19-29.[4]. kumar p, song zh. cb2 cannabinoid receptor is a novel target for third-generation selective estrogen receptor modulators bazedoxifene and lasofoxifene. biochem biophys res commun. 2014 jan 3;443(1):144-9.
Check Digit Verification of cas no
The CAS Registry Mumber 190791-29-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,7,9 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 190791-29:
(8*1)+(7*9)+(6*0)+(5*7)+(4*9)+(3*1)+(2*2)+(1*9)=158
158 % 10 = 8
So 190791-29-8 is a valid CAS Registry Number.
InChI:InChI=1/C28H31NO2.C4H6O6/c30-24-11-15-27-23(20-24)10-14-26(21-6-2-1-3-7-21)28(27)22-8-12-25(13-9-22)31-19-18-29-16-4-5-17-29;5-1(3(7)8)2(6)4(9)10/h1-3,6-9,11-13,15,20,26,28,30H,4-5,10,14,16-19H2;1-2,5-6H,(H,7,8)(H,9,10)/t26-,28+;1-,2-/m10/s1
190791-29-8Relevant articles and documents
LASOFOXIFENE MODULATION OF MEMBRANE-INITIATED ESTROGEN SIGNALS AND METHODS FOR TUMOR TREATMENT
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, (2018/08/03)
The present invention found that lasofoxifene is an antagonist of ER-α36. It not only inhibits the growth of ER-α36 positive lung, colon and gastric cancers, and also it can inhibit the growth of acquired or de novo tamoxifen-resistant MCF-7 cells. Our finding also provides methods and compositions for treating cancer comprising lasofoxifene alone or in combination with at least one other agent selected from the group consisting of gefitinib and/or trastuzumab or functional equivalent thereof, and an inhibitor in hormonal or epidermal growth factor signal transduction pathways.