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1637747-39-7

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1637747-39-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1637747-39-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,7,7,4 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1637747-39:
(9*1)+(8*6)+(7*3)+(6*7)+(5*7)+(4*4)+(3*7)+(2*3)+(1*9)=207
207 % 10 = 7
So 1637747-39-7 is a valid CAS Registry Number.

1637747-39-7Upstream product

1637747-39-7Downstream Products

1637747-39-7Relevant articles and documents

Aqueous reduction of iodosteroids to deoxysteroids

Liu, Changsheng,Sun, Lili,Li, Chunbao

, p. 309 - 312 (2014)

A new method for the reduction of iodosteroids to deoxysteroids has been developed using Zn, HCOOH and a catalytic amount of Aliquat 336 in water. In total, 13 iodosteroids were reduced in good to excellent yields. The higher solubilities of the substrates lead to the faster reactions, and the aqueous reaction was efficiently accelerated by granular polytetrafluoroethylene. The advantage of the aqueous system over eight organic solvents has also been demonstrated.

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