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1967-88-0

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1967-88-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1967-88-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,6 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1967-88:
(6*1)+(5*9)+(4*6)+(3*7)+(2*8)+(1*8)=120
120 % 10 = 0
So 1967-88-0 is a valid CAS Registry Number.

1967-88-0Relevant articles and documents

QUINAZOLINE COMPOUNDS

-

, (2011/06/11)

Disclosed are compounds having the formula: wherein R1, R2, R3, R4, R5, R6 and R7 are as defined herein, and methods of making and using the same.

Tyrosine kinase inhibitors. 8. An unusually steep structure-activity relationship for analogues of 4-(3-bromoanilino)-6,7-dimethoxyquinazoline (PD 153035), a potent inhibitor of the epidermal growth factor receptor

Bridges,Zhou,Cody,Rewcastle,McMichael,Showalter,Fry,Kraker,Denny

, p. 267 - 276 (2007/10/03)

4-(3-Bromoanilino)-6,7-dimethoxyquinazoline (32, PD 153035) is a very potent inhibitor (IC50 0.025 nM) of the tyrosine kinase activity of the epidermal growth factor receptor (EGFR), binding competitively at the ATP site. Structure-activity relationships for close analogues of 32 are very steep. Some derivatives have IC50s up to 80-fold better than predicted from simple additive binding energy arguments, yet analogues possessing combinations of similar phenyl and quinazoline substituents do not show this 'supra-additive' effect. Because some substituents which are mildly deactivating by themselves can be strongly activating when used in the correct combinations, it is proposed that certain substituted analogues possess the ability to induce a change in the conformation of the receptor when they bind. There is some bulk tolerance for substitution in the 6- and 7-positions of the quinazoline, so that 32 is not the optimal inhibitor for the induced conformation. The diethoxy derivative 56 [4-(3-bromoanilino)- 6,7-diethoxy-quinazoline] shows an IC50 of 0.006 nM, making it the most potent inhibitor of the tyrosine kinase activity of the EGFR yet reported.

2-(Piperazinyl)-4-pyrimioinamines

-

, (2008/06/13)

Herein is disclosed 2-(1-piperazinyl)-4-pyrimidinamine derivatives, acid addition salts thereof, processes for their preparation, methods of using the derivatives and pharmaceutical compositions of the derivatives. The derivatives are distinguished most readily by having novel substituents at position 4 of the piperazinyl radical, the substituents being selected from the group consisting of optionally substituted 2-cycloheptimidazolyl, 1,4,5,6,7,8-hexahydrocycloheptimidazol-2-yl, 2-benzoxazolyl, benzthiazol-2-yl, 1H-2-benzimidazolyl and 1-oxo-2,4,6-cycloheptarien-2-yl. The derivatives are useful for treating hypertension in a mammal.

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