IGF-1 LR3 vs IGF-DES
IGF-DES is cheaper per mg: $1.558 per mg at its best-priced strength, 2mg (IGD, special order, 50-box minimum) against $20.464 per mg for IGF-1 LR3 at 1mg (IG1), 92 percent less. Every IGF-DES line is special order; from one box, IGF-1 LR3 at $20.464 per mg (IG1) is the only option. The two share no strength, and a milligram of one compound is not a milligram of the other, so these figures compare price, not amount of compound. IGF-1 LR3 is offered in 2 strengths (0.1mg to 1mg), IGF-DES in 1. Neither is on the shelf today. The least either takes: one box of IG1 at $204.64, against 50 boxes of IGD, $1,558.00 of goods.
Prices revised · USD per box of ten · freight included to US addresses from $1,000 of goods · COA per batch · research use only · New to us? What can be checked before you pay
What differs between IGF-1 LR3 and IGF-DES
Two recombinant analogues of the same 70-residue hormone, going in opposite directions: LR3 adds a 13-residue N-terminal extension and swaps glutamate 3 for arginine, reaching 83 residues; DES(1-3) removes the first three residues, leaving 67. Both keep the three disulfides; IGF-1 LR3 carries three methionines, two of them in its extension, and IGF-DES one, and both certificates carry an endotoxin line because both are made in E. coli. Their sheets give the calculated masses with the three bridges formed: 9,111.6 and 7,365.4.
| Detail | IGF-1 LR3 | IGF-DES |
|---|---|---|
| Best per mg, by the box | $20.464 per mg (IG1) | Special order only |
| Best per mg, special order included | $20.464 per mg (IG1) | $1.558 per mg (IGD, 50 boxes) |
| Price per box sold singly | $204.64 | Special order only |
| In 50-box lots, per box | $31.16 | $31.16 |
| Strengths offered | 2: 0.1mg, 1mg | 1: 2mg |
| Highest price per mg | $31.160 per mg (IG01, 50 boxes) | $1.558 per mg (IGD, 50 boxes) |
| On the shelf today | 0 of 2 strengths | No, special order |
| Range | Growth & IGF | Growth & IGF |
| Also called | No other name | IGF-1 DES and DES(1-3) IGF-1 |
| Form | Lyophilised powder | Lyophilised powder |
| Molecular weight | 9,111.6 g/mol | 7,365.4 g/mol |
| Formula | C400 |
C319 |
| CAS number | 143045-27-6 | 112603-35-7 |
| Release limit | Purity by RP-HPLC, with the limit stated on the batch certificate | Purity by RP-HPLC, with the limit stated on the batch certificate |
Each line’s own page: IGF-1 LR3 and IGF-DES. Reading either certificate: how each line is released. Checking a batch: verify a batch number. Every line priced: the price list. Checking another supplier’s quote: the price per mg calculator.
Every strength of both
Compared elsewhere
PEG MGF vs IGF-1 LR3
$6.233 per mg against $20.464 per mg at best (PEG MGF, a 50-box line); 1 strength against 2.
CJC-1295 vs IGF-1 LR3
$1.042 per mg against $20.464 per mg at best; 1 strength against 2.
Questions
What is the difference between IGF-1 LR3 and IGF-DES?
Two recombinant analogues of the same 70-residue hormone, going in opposite directions: LR3 adds a 13-residue N-terminal extension and swaps glutamate 3 for arginine, reaching 83 residues; DES(1-3) removes the first three residues, leaving 67. Both keep the three disulfides; IGF-1 LR3 carries three methionines, two of them in its extension, and IGF-DES one, and both certificates carry an endotoxin line because both are made in E. coli.
What makes up the sixteen residues between IGF-1 LR3 and IGF-DES?
The 13-residue extension at LR3’s N-terminus and the three residues DES(1-3) removes, which LR3 carries with arginine in place of the glutamate at 3. Together they weigh about 1,746, C81H124N20O19S2, the gap between C400H619N111O115S9 and C319H495N91O96S7. The S2 in that difference is LR3’s two extra methionines; the seven sulfurs the formulas share are the six cysteines of the three disulfides and the one methionine of IGF-1 itself.
Which is cheaper per mg, IGF-1 LR3 or IGF-DES?
IGF-DES, at $1.558 per mg for its best-priced strength, 2mg (IGD, special order, 50-box minimum) against $20.464 per mg for IGF-1 LR3 at 1mg (IG1), 92 percent less. Every IGF-DES line is special order; from one box, IGF-1 LR3 at $20.464 per mg (IG1) is the only option. The two share no strength, and a milligram of one compound is not a milligram of the other, so these figures compare price, not amount of compound.
Which comes in more strengths, IGF-1 LR3 or IGF-DES?
IGF-1 LR3, with 2 against 1. Every strength is a separate line with its own code, price and stock state.
Are IGF-1 LR3 and IGF-DES made to the same specification?
On the same methods, with no fixed purity figure on either sheet: both are protein lines, released on reverse-phase HPLC against the limit stated on each batch certificate, identified against the reference standard by the method each certificate names, with an endotoxin line, net content within 5 percent of label and a retest date on the batch record.
Structural facts from each compound’s sheet and profile; prices and stock from the list at the moment this page was opened. How to compare strengths on price.