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147510-56-3

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147510-56-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 147510-56-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,5,1 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 147510-56:
(8*1)+(7*4)+(6*7)+(5*5)+(4*1)+(3*0)+(2*5)+(1*6)=123
123 % 10 = 3
So 147510-56-3 is a valid CAS Registry Number.

147510-56-3Relevant articles and documents

Bis(4-hydroxyphenyl)methane: Isolation and Structure Elucidation of a Novel Estrogen from Commercial Preparations of Phenol Red (Phenolsulfonphthalein)

Bindal, Rejeshwar D.,Katzenellenbogen, John A.

, p. 1978 - 1983 (2007/10/02)

Commercial preparations of phenolsulfonphthalein (Phenol Red), a pH indicator dye widely added to cell culture media, have weak estrogenic activity that can be accounted for by a minor lipophilic impurity (ca. 0.002percent).We have isolated this impurity, determined its structure to be bis(4-hydroxyphenyl)methane, and synthesized it from phenolsulfonphthalein.This compound binds to the estrogen receptor with an affinity 50percent that of estradiol; it stimulates the proliferation and increases the progesterone receptor content of estrogen-responsive breast cancer cells in vitro, and stimulates uterine weight gain in rats in vivo, but shows a potency in these assays only 0.1-0.2percent that of estradiol.We suggest haw this novel estrogen may be generated during the preparation of phenolsulfonphthalein.

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